So I'm building up this single speed freewheel bike on my old, Sears Ted Williams frame.

I'm waiting for the single speed freewheel to arrive from an ebay seller. I've laced the rear wheel and got it round but haven't centered the rim or trued it up yet.

I need to add a couple of spacers under the lock nuts to bring them out to 120 (since its a BMX hub). Looking at the wheel in the frame, it looks like it would be best to add them only to the nondrive side to get the single freewheel out as far as possible for good chainline; in effect a reverse dish!

Or should I just put one spacer on each side and center the rim?

Wheel will only be used on this bike, so oddness is fine.

I've built a few trackbikes but never a converted road bike single speed!