It is my understanding that when a accelerator card is added to the A2000, it will disable the internal 68000 CPU and use the onboard CPU instead.
A possible reason for your GVP card not working, can be that the kipper2 8MB RAM expansion and CFIDE68K IDE adapter you got connected prevents the GVP 030 CPU from taking over. Have you tried running your Amiga with the GVP card only, without the two other expansions?
