As far as buying dolls, weight is a main consideration. Also you might want to check on if the body has things like jelly breasts and ass, it will improve satisfaction. Also have somewhere to store them to keep them clean and undamaged. Silicon is more durable and easier to care for then TPE but more money. If you buy a doll expect to spend money, because you need clothes and stands and wig stands. Really depends on what you want to do if just companionship or more for sex. But you can expect to spend a bit giving her a personality.
My question would be how much can you comfortably lift?