well i weighed my pastel yesterday, and hes not at 356g. Now during feeding day he destroys his meal, and lately hes showed to still be hungry afterwards. I mean he has always done this, but more so now, than in the beginning. I feed him every 5 days, and its usually a 30-35g white mice. When i first got him almost 3 months ago he was 129g, so he has doubled in weight.

Now here is my problem, i have basically 4 sources of where to buy mice/rats here in NYC. the first 2 sources are mom and pop petstores, the problem with those are, they have alot of variety compared to petland, such as they have black mouses, grey, white, etc etc, but basically its the same, they will have feeder mice which are generally 30-38g, and then they will have another section apart with little bigger mice that are around the 45-55gram mark im looking for, but when i ask for them they always tell me "no those arent for sale because there pregnant" then they have small rats which i think are too big, they look to be like 70grams and up, then of course they have jumbo rats, which obvisouly are too big. My third source is petland. Which is pretty plain, they have small mice (30-38g) medium rats (70g +) and jumbos. Then i have a 4th source but thats a no go which is a breeder of ASF's. And he woudl definetley be able to accomodate me with a mouse i need, he will even weigh it for me and all, but its a ASF, and i dont want my pastel hooked on them. SO hes pretty much out of the question.

So what should i do, keep feeding him the 30-38g mouses until he gets big enough, or go crazy and feed him a medium rat which are 70g and definetley bigger than the widest part of his body?

BTW to date, i have never fed him a mouse that has left a lump. And the biggest mouse i fed him was 39grams.