I did a little research and determined that I could go ahead and rivet the skin to the longerons forward of the upper skin piece I just finished. This went fast and turned out good.
I did more research and got the 1/4" holes for the static ports located and drilled. This involved going through 3 sizes of drill bits then a reamer to get a good fit. After that I located the 3 rivet holes one each static port and drilled those into the aft fuselage.
Other static port prep included the usual deburring and dimpling then I countersinked the static port fittings for riveting. I also primed the mating surfaces of the port fittings and the inside of the fuselage.
Static port fittings ready for priming:
Static port hole and rivet holes in aft fuselage:
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