My Cherokee is in the paint shop, due out in a few weeks. Looking for
suggestions on maintaining a new Imron finish... Of course, I will
solicit input from the paintshop as well.

The plane is hangared, and only sits outside when on trips, so I
figure that is a good start.

Many people do not recommend washing/waxing new paint for several
months (to allow full curing). Is this required?

I fly IFR. Need I be concerned about flying into rain or keeping the
plane out of rain until it is 'fully cured'?

How about taking bugs off the leading edge?