I have same setup plus the Indivision AGA and indeed everything fits just fine (although you have to remove the plastic connector of Indivision, leaving only the pins for the ribbon connector else it doesn't fit).
That ofc only with the double kickstart spacers in order for space to exist underneath for both BVision and Indivision.
The problem with the keyboard attaching in the lower kickstart is deffinitely a problem. The way I started dealing with it (haven't finished yet) was marking carefully the metal keyboard base and cutting via dremel the area (1cm height) where the kickstart is having the issue. (IIRC one fellow amigan from this forum have done this also succesfully) I don't think there will be a problem since the height that u need is only a little and won't interfere much with the keyboard. OFC don't forget to put an insulation in the flexible keyboard layer in order not to short-circuit with the kickstart pins once closed.
Here's some photos of the setup, without keyboard cut yet.
