Considering that ACA cards has same desing flaws than Apollo cards has, need for timing fixes, etc, I wouldn't be surpireced if ACA cars are actually Apollo cards. Jens however bought that desings years ago.
68030 is not a fast, it is bog slow. Anything below 68040 is painfull to use.
Most of 68040/60 targeted apps and games uses heavily FPU. Making 68040/60 accelerator without FPU is pointless.