Newb lookin to get Blown

Hello, My name is Mark from Oklahoma. I am wanting to build a low compression centrifigul gas motor for my current street ride. I am not real familiar with blown gas or centrifiguls. My last ride had a blown alky injected 509 but that is a totally different animal. I was looking @ the ATI F1Rs but I really need advice on my best blower option. .I have a built 468 nitrous motor that should be good for 800-1000hp with a piston swap for the blower. The heads are World 320's, pro systems N20 930 carb, 2 1/8 header primaries, etc. Also what comp ratio should this combo have for 15+lbs of boost on 110 octane? Thanks in advance.

Thanks for all your help.