I think the only problem with that would be that some Ball Pythons refuse to take more then one food item per feeding.
Feeding twice the month a fairly large (but still appropriate) meal can be done with adults Ball Pythons. Esp. if you aren't building up a female for breeding.
I'm not sure I would want to do this with a younger Ball Python, though (below 1000gr)
They usually do get hungry more often and you don't want to put to large a meal into them. To make up for the missing week, you'd have to feed a meal that would be bigger then I would be comfortable with.
All that said, you do have the odd "young" BP that actually prefers to eat less often then weekly. I'd still like to offer weekly, though.
I know you said you prefer NOT to feed FT. So if you don't want to save surplus and feed it off that way, you could possibly sell some? But that might make you short on appropriate sized rodents, too.
Perhaps you could just see how it goes for a couple of month, try different things. Most likely once you have the ongoing "operations" things will fall into place and you will figure out what works
