Could someone recommend a affordable blast cabinet that doesn't take up a whole lotta space. This will be used for prepping parts for cerakote,gunkote,duracoat etc. Largest piece to blast would be a barrel up 26". Or would barrels be better to blast outside of the cabinet?

I've had good luck w the harbor freight cabinet. Make sure you seal the joints when you assemble it. It will leak badly if you dont.