well, i imagine your rather new to the game? i'm not to clear on that... but i'd say you have a pretty solid bag going - i think its wise to keep it simple mold wise and learn your discs..
with that being said, since you already seem to have that in mind, what advise you lookin for? more discs to add or ones to replace?
you prob read these forums as a lurker b4 signing up (most of us do) but the discs you have mentioned seems to be some of the most hyped up on here... so i dont think you can go wrong
personally my bags different, but it works for me, i've tried lots and these were the ones that stuck, and i'm not sure me-vs-you whether we'd benefit each other giving advise
but... its the internet and what the hey...
i know innova...
i love the roadrunner for longer anny's, hyzerflip type shots
firebird for utility, forehand, overstable slot - just a gem
i like the monarch for overhands, but dislike to BH,FH
without knowing the "stability" your discs are - and how they are to you - thats all i'd add
unless your willing to hear "try a buzzz" - dude they are like discs with lazer beams
but if you like the rocs, and have your "range" covered, then i say keep em
the drone is an amazing disc,but its more "situational" as to when i'd need it, but nothin turns a corner better, fh or bh, skips are mind blowin events
good luck throwin though, sounds like you did your research and chose some solid plastic for a base, i'd bet what you have listed would cover 75-85% of my shots, i just do em with diferent discs... but i think you need a utility disc, overhand disc, and the RR would be a bomb disc, was my longest for a while when i got my mids to the 300 mark (my mids being buzzz's though)