I have the compressed hubbatch, busterMAX, bugstop, and the weap+1. (Occasionally I would take the weap+1 off to use woodShadow\'s invis attack). With all of those, there are 3 squares empty, the far top left, far bottom right, and one 4 from the bottom and 2 from the right (right above the weap+1).

The Results:

All of the POSITIVE EFFECTS of Hubbatch and busterMAX (the bugstop takes out the 1/2 hp from hubbatch and the instant-use-of-chips from busterMAX), and weapon level 2. Im good.