Sterlite 28s are nice. I use binder clips to hold the lids down. Hydrofarm stat will work fine for your needs. Accurite thermometer for the win. Drill some ventilation in the tub. Rbi hide boxes rock. No, water conditioner is completely unnecessary. I wouldnt use carpet personally. Too hard to clean/disinfect, so the risk of bacterial growth is very high. Paper towel, newspaper, carefresh, and aspen are all great options.

As far as heating the cool side, that is completely dependant on the season, climate, and how you keep your house.

Sent from my SM-G730V using Tapatalk 2