Welcome to the site.

I personally prefer tubs over tanks because I find it's easier to keep my humidity up. I do keep a few in tanks though. My first boa is in a tank in my bedroom and as a result she gets the most attention.

There is a lot of debate over live vs f/t. I currently feed f/t but only because I am not in a position where I can breed my own feeders which means I would have to go to the store at least once a week which to me is a pain. I can also buy my frozen feeders in bulk which saves me some money. As soon as I am able to start breeding feeders I will probably switch to live.

For heating method are you referring to heat f/t or heating a cage? For the first, I let mine sit out until they completely thaw and reach room temp, then I stick them in some hot water right before I feed. As for heating the cage a under tank hearer (UTH) with a thermostat is the best way to go in my opinion.