If you indeed intend to combine the KID and the Pirc, 1...g6 is very logical. You can play ...Nf6 at about every stage. In some dangerous variations you may postpone it, having other good options.
You will not have any problem against the queen's pawn stuff either: 1.d4 g6 2.Nf3 Bg7 and 3...d6 and you just see, what setup White chooses. Sometimes you even might consider 4...f5, getting a good version of the Leningrad.
Extra possibilities like 1.e4 g6 2.d4 Bg7 3.c3 don't look dangerous either.
1...g6 is really an opening, where avoiding main lines does not make sense for White.

been reading for months - finally, my first post!

anyway, I'm a (not very good  ) Pirc addict, and also studied the KID. Certainly made sense to be familiar with both, as the pawn structures / development are so familiar.  Have also recently begun looking at the Modern / Hippo.

One thing I noticed is that the Pirc and KID are very different in long term plans : in the KID black would like to play on the Kingside (it is very fun to roll over your opponent using your KS pawns!).  This is completely opposite from the Pirc, where black hopes to play QS, and/or break down white's center.  black needs to survive on the KS - not attack!   

So... my feeling is that Pirc / Modern players avoid the KID so that they can keep their long-term plans simpler / consistent....

Probably because KID has sooo much theory. Personally im KIDer and when i briefly flirted with the modern last year, i was always thrilled to see c4.  
Modern players typically play it to avoid all that theory. They hope to outplay the opponent in positions they know more about. Thus they play the hippo etc where plans are more important and where there is a chance that White has no idea what to do. Add this to the fact that the Modern is so flexible and there are so many underknown variations to choose from and voila: no mainline KID for you!