Here is my forecast for the next ten days which is probably about normal for this time of year.

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It looks like it already gets some shade from the trees as well as the plastic. Also, your daytime tempuratures are very low, if that correlates to the intensity of the sun at all like it would here then those look like very mild days, only 3 out of 10 are even full sun according to the forecast.

I would say 1 more layer of plastic at most, but I am a newb!

I think the plastic will filter out enough of the sun's strength. From the sun's angle, the oak tree with brown leafs and the weather forecast i see you live in quite a cold zone. I hope you'll bring the plant inside for the night? Quite chilly nights! But the sun's strength is not that high either.
I read once that a plant will not handle much light if the temps are low.
So i recommend keeping them warm. But not too hot! Is that a heater you got there in the tent? Monitor the temps inside. What are the temps inside the "tent" when the sun shines on it?
What the temps should be i don't exaclty know. Maybe another cold climate pepperhead can help you with this.
Cheers!

No, I got a small fan/heater with thermostat in the greenhouse. It keeps the temp from about 58 to 66 degrees when there is no sun or cloudy. But the day I set the greenhouse up, it was about 65 and sunny and the temp inside got to 100 degrees. I am not so much worried about heat but the sun's rays on virgin plants. There is slight shade above them but it is pretty insignificant at the angle the sun is now. I will be opening the top of the green house on days like tomorrow so the temp wont get over 80 or so but I am still concerned that 12 hours of sun might still be too much right now.

That is an awesome set-up.
Your plants are well ahead of mine.

Josh

I would let the plants get accustomed to full sunlight as quick as possible. As far as i know, once they're used to it, they can't get enough of it.

That's a pretty sweet setup!!

When I harden off mine, I start with indirect light - the number of hours doesn't really matter at that point, then move to dappled light (under a tree) for a few hours or longer if they don't show signs of stress. Doing that for a couple of weeks while waiting for night temps to stick to around 50 is all I've had to do.

I don't know how much UV that plastic blocks, but, I would just check on them a couple times the first day or two you put them out and if they don't look sad, you're probably good to go (as long as you don't cook them on a sunny/warm day).

Thanks guys for the advice. I have had them outside two full days with today being the third. First day was cloudy and about 45. Yesterday was clear and about 65 and today it is forecast for 62 and rain. We may not get much rain but we got the clouds. I have been checking the plants regularly and the temp has been kept from about 55 to 80 degrees during that time. After today, we should have few straight days of 50's and 60's with good sun. On those warm sunny days, I can open the top and let the breeze have at them but the sun is still lightly filtered by the top.

Once the weather gets to minimum standards around here (probably early June). I will be planting my Bhut's directly in the garden and then putting the others in containers in the front of the house. Then the greenhouse will be removed.

It sounds like you're in my neck of the woods. Your plants are looking great for this time of year. Cool setup too! The only times I've had sunburned plants, it's happened in the first 2 days. I think you should be good to go by next week.

Hmm...esox07...musky fisherman?

Muskymojo:
I fish for whatever bites. The "Esox" comes for my love of Northern Pike. I really enjoy Walleye fishing in rivers though. I have only caught one Musky in my days. But I am near Wisc. Dells. Can't wait to get the plants in their summer homes. I will probably put the 3 Bhut's in the raised garden in a couple weeks. The others will all go in containers in the front yard to keep the cross breeding down. Weather is looking better now so hopefully, I get them planted soon. I am hoping their time in the garden/green house will have hardened them enough by then. I open the top when the temp is in the high 50's and 60's and it is sunny because it gets over 100 degrees inside there otherwise. The wind will do them good too like today.

Pike are cool too! Anything that tries to eat a 12" lure is worth catching.

I'm just starting to harden my plants, but we still have plenty of time.

Good luck this season!

Musky:
Yep, good luck to you too, in the garden and on the water.

Funnest thing I can think of is tossing a sucker about 10-12" long out below a bobber the size of a soft ball and watching it slowly submerge like a big lumbering submarine. In clear water, you can see it three or four feet down.