Hi! ARe you asking about a permanent move or summer plant vacation?

OK. In that case, 100% exposure is probably an unrealistic and potentially even undesirable goal. And yes, you would want to do it in stages to avoid fugly sunburned foliage. It's safe to start with the first or last hour of the day, and gradually increase by 30-60 minutes about weekly. Most of mine are on the east side of my house, so they get into shade for afternoon when it's the hottest. By the time you get to about 4 hours, that should be enough for most things to produce very satisfactory color and stance. You may find that you like the colors better for many plants under a range of exposure that is well under 100%. Trying to adjust to more than that, IME, results in too much stress because pots (and then the roots) get too hot when the sun shines on them.

Whenever you have more than 1 of a same plant, you can experiment with placements and observe twice as much in a particular period of time.

My comments are in regard to succulents, not necessarily cacti. Probably should have asked about that first too. If all you have are cacti, I can say I follow the same plan, but because I only own 1 actual desert cactus, it's not much of an anecdote.

2 weeks should be pretty good. I am very diligent about matching indoor/outdoor light but this year I was lazy... have regrets about that!

It usually take 2 weeks to fully transition my plants from being in the basement to full sun. i do it last week of April. i move my plants in the north side of the yard and keep them there for about 4-5 days. That area gets early morning and late afternoon sun only. then they go in the south facing yard but under the shadows of the rungs of my deck for another week, there it gets dappled shade throughout the day except late afternoon when it gets direct sunlight by then. after that, its full sun. i only burned the propagations this year out of 50+ pots. some people use shade cloth.

I use shade cloth. This year the heat and light seems a bit more intense than prior years - I would have done better to have added another layer.

I started acclimating my plants on April. Easier to do it then when the sun is not so likely to burn