Help with a flexible bottom row for 60% HHKB clone

[ElliotFortyTwo]

I'm planning on getting a steel plate cut for a hand-wired 60% in a Poker case with a HHKB layout.
I already had one plate cut but did the spacebar wrong for the keycaps I have, so I want to do something a bit more flexible for different available spacebar configurations.

Could I get some feedback on this layout?


It should support:
 - Bottom row layouts
    - 1, 1.5, 6, 1.5, 1
    - 1, 1.25, 6.25, 1.25, 1
    - 1.25, 1.25, 6.25, 1.25, 1.25
 - 6u spacebar
    - 76mm or 95mm stab spacing
    - centered or offset spacebar switch
 - 6.25u spacebar
    - 80mm or 100mm stab spacing

I have widened the holes for the bottom row switches and spacebar stabilizers to support these different options.
The keyboard will be hand-wired plate mount MX switches and cherry stabs.

Will the wider cutouts cause any problems with switch/stab fit and stability?
Any common 6u or 6.25u spacebar configuration I've missed?

[.]

There's a lot of flexibility, I like it! I would like to have one as well 

[TalkingTree]

The keyboard will be hand-wired plate mount MX switches and cherry stabs.

Will the wider cutouts cause any problems with switch/stab fit and stability?

Most likely. Switches will slide sideways.