A few quick thoughts...
From a practical point, you'll be storing the columns with wheels facing inwards (away from the wall) so you can tilt the column and roll on the wheels.
The hole spacings are a little more than 5", so adding three more anchors in the right places allows you to move a column about 5" tighter or looser. With the columns at the wider position, the baseplate covers an extra "inner" row of anchors for that flexibility.
When installed, you will want to allow for space outside the column(s) big enough for you to pass. With a vehicle raised on the lift, the arms block your access between vehicle and the columns.
I installed mine with 132" outside pad spacing on the widest set of anchors. That works well for me with two cars (Porsche and Honda Pilot) that have lift pads under the rocker sills. For K's 4Runner with lift points on the frame rails not out under the rockers, I move at least one column in a row of holes so the arms will still be spread enough. I usually want to have enough room between car and column to get a door open wide enough to get in and out of the driver's seat, and 126" outside spacing is just barely enough. Smaller cars can use less.
I added a couple extra anchors at the parking place for the columns when not in use. The ground moves here once in a while, and I'd rather not have those columns out "walking around" with the cars.
