Hi Monica,
The kit comes with anchors that allow you to install it on the ceiling or from wall to wall, so it sounds like this would work perfect? And, yes, you can use LED replacement MR16s. A lot of my customers have used them successfully with this kit!

If I can help at all, feel free to give me a call at 877.445.4486. Thanks!

-Ryan

thanks so much - i am excited about installing these lighting in my sunroom. One more question - i was speaking with another lighting company who sells the kit and they said i have to have a junction box in the ceiling for this kit to work which would be a problem as i have no access to the ceiling - is that correct? or can i put a junction box in the wall and then string the cables wall to wall?
thanks again!

one more question - if i decide i want to switch the lighting heads down the road maybe for more modern ones or to upgrade, is that possible with this system? Ie., would other heads be compatible?

Hi Monica,
You can use the wall junction box as well.

As far as the heads, Tech-Tiella does not make any other style of heads for this kit, so unfortunately, you would only be able to use the fixtures that it comes with.

Hope that helps! -Ryan