For those of you using the grid hotkey layout, what modifications have you made?

I'm just curious as I'm using the default (ish) layout with a few modifications:

• Middle click to select blacksmith
• Tab for next idle villager
• Additional mouse key 1-4 to select all military production buildings
• ` to move to next notification.

What changes have you made? I feel like I'm running out of options but I'm looking for a hotkey to select lumber camp, mill, etc.

I'm concerned if I bind lumber camp to A for example, but have the build menu open I'll just build a farm (which is bound to A) instead of select the lumber camp.