Whats the problem with repashy? You could get indoor and outdoor. Use outdoor daily and indoor a couple of times a month. This could change based on your sun exposure.
i keep mine in heavy foliage. UVB and 6500k light. Temps 60-70 at night low 80s day. Misting several times a day for 20-30 minutes. My montiums are right next to them.
The sooner the better. I would keep in groups of 5 for a month or so. Start to separate based on size at that point. At about 3 -4 months you may want to put individually.
Pressure treated wood is treated with a safer chemical now. It's safe for human contact. Check the label it might be safe as is. I don't seal my cages. I just was them with soap and water.