In trying get info on the same problem I have read the following:

1. Increased gap tolerates leaner mixtures with less misfire.
2. Increased gap requires more energy
3. Increased compression dictates a smaller gap or more energy due to the density of the air.

Opinions are welcome. Seems like a crap shoot in a way but if it were that critical, I think a lot of DIY's would have stumbling engines. Best way IMO would be to gap it how you think best (based on feed back or whatever) and then pull the plugs and read them after a few weeks and make adjustments accordingly.