I don't see anything wrong with feeding raw and kibble. Though I would probably wait 12 in between switching on and off. My folks actually used to feed raw and kibble mixed to their dogs and we never had any problems other than gas
so that is why I would try to keep them separate.
As for catching wild animals, they need to be frozen SOLID for 3 weeks to kill parasites. Raccoons can not be used as they have a nasty parasite that doesn't get killed by freezing. At least that is what I read.
Read up on the PMR (PREY MODEL RAW) website.