I keep a betta in my community tank which also has adfs and feed frozen blood worms and flake food but I never had a problem with my betta over eating and getting bloated. Has you betta gotten bloated before or are you concerned he will get bloated?
It is totally possible for a betta to be in a community tank quite a few people actually do it including myself but it is a gamble if you do not know the temperment of the betta so if you do not have another tank to separate it if it is aggresive do not attempt it.
My tank is not perfect but I'll just post it anyway. Its a 38 gallon and for plants I have java ferns, S.Repens, java moss and a amazon sword. For fish there are 2 golden wonder killifish, 1 honey gourami, 4 cherry barbs(had 4 more in quarantine but 3 died), 3 lemon tetras( they are hard to find...