Be prepared to be flexible. If you have enough snakes & a desire to feed FT, you'll find you're doing a bit of everything. I've one stubborn mouse eater (used to be more than that), but he's a boy & we've got him on a 5 day schedule- he gets 2 items at every other feeding.
I've got babies (all start on L rat pups) converting over to FT rats, 1/3 are still a tad shaky. If I get a refusal on FT they get L the next day. Then there's the older ones 4 of those - 2 will only eat live, 2 will do pre-killed. 3 of those are girls & I can usually get them on FT after their 1st clutch if not before.
The rest (25+) are on FT & do great on it. I like the consistent feeding I see with my FT feeders, they seem to be less sporadic than the others. But you'll end up being flexible because as you get snakes in, you're adjusting to whatever feeding method they were on, some will adjust, some not. You have to be flexible. I still think it's worth it for me because of the % of FT feeders here & I'm pretty good at getting them to come 'round to it.
I say give it a shot if you feel up to it.