I’m not sure how you shift but maybe if you’re not a right shift user, you can move your raise key over yonder and take out an extra key in the bottom row (and possibly make the remaining key 1.5u instead for style?). Another alternate possibility if you continue down this line of thinking is making your L_win key 1.25 since you’ll have room if you take out one of the 1.25us on the other side without colliding with the arrow keys.
Just some food for thought