Sounds like you wanna do something similer to what I wanna, cept I wanna put a B18B1 in my Crx Si. Your whole timeline sounds like fun man, its really upto you. If you really want my .02 I'd say your in for a good trip with a B18 in your "plain" crx. It must be a light one as I am told the Si was the heaviest.
So get that civic sold, and get ready cause a lot of things are gonna go by very quickly in that crx. good luck by the way :thumbup:
have fun!