That all sounds good. A few problems you might run into. The distributor that comes with a USDM B20 is going to be an OBD II unit (no CRV's were made before '96) along with the injectors, unless you get a JDM engine (not sure what it will have). You may have to re-pin the distrubtor and change the harnesses for the injectors (or use OBD I B-series stuff). I'm not positive any of that will be nessicary, but it's something to keep an eye on. I know my OBD II Civic distrubtor uses a completely different plug than my OBD I Civic and Integra motor and the OBD II injectors use a round plug while the OBD I's use a square (same wires, same function, just different plugs).

The GS-R intake manifold will not work, that will only bolt to a GS-R head. Really not worthwhile anyway, plug you'd have to wire up a rpm switch for the secondaries. You might even consider going with a 2nd gen B16A intake manifold as opposed to the LS. It's a little bigger higher flowing unit, that might help top end out a little. You can usually find them the parts trader.

You'll be hard pressed to find a tranny, axle's and shift linkage for $800 so I'd probably budget a little more for that (you might get lucky though). I'd definately get a VTEC tranny though, shorter gearing will help acceleration but hurt gas milage and highway rpms will be higher. The B20 most likely won't come with a flywheel or clutch (most B20s' were automatics) and I'd definately consider getting a lightweight flywheel and gripper clutch. I have a Clutchmasters stage 3 clutch and alumium flywheel and I like them both but they cost around $850. If you can find the money, a LSD is definately worth considering for autoX. Also budget some money for a new timing belt, water pump, hoses and the like (little stuff can add up quick) and also an intake and exhaust system as well. Seeya.