That is a super good deal on a CFX !!! If I didn't already have one I'd buy it.
As for the hunting question.......177 or .22 ,,,,,, both are capable of taking small game and every hunter has their favorite caliber.. That being said,,,, I have many .177's and hunt with them all and they take game just fine but,,,,, .22 cal is my preferred hunting caliber overall....
Jeff