Beautiful! Mine hasn't been driven since 1987. It keeps getting pushed to the back burner...
Those components will work just fine with the clarion amp. Mount both 5.25s in the rear corners behind the seat. Run those 3.5's in the dash. Run them off the clarion 4 channel amp. I would get a mono amp for the sub, and be done. Does the head unit have RCA's? If so, use the set of RCA's for the 4 channel, and run the sub from the speaker level input.