Electricians, do you see any problems with this wiring diagram for power at light shared between independent light groups?
This looks good, although you'll have to pay attention to keeping your neutrals separated in the switch boxes!
Your plan for the light circuit should not be an issue at all; you're running proper NEC 2011 new-style switch loops with neutrals provisioned for future use, and your fixtures are designed to take LED modules, not Edison-base bulbs, so some dim bulb incandescenthead can't go in and overload the circuit with their heat globes, either.
The one caveat, though, is that you can't just glom all the neutrals together in the switch boxes like you're used to.  You'll need to keep the lighting neutral strictly separate from any other neutrals present there to avoid falsely tripping your GFCIs, if nothing else.
Also, in an unrelated note, I'd consolidate the two apparently-adjacent switch boxes in your plan into a single six-gang box.  If that's impossible, though, I'd at the very least get all the fan switches into one box and move the switches for the rest of the lighting out by themselves so that you don't have awkward problems with crossed wires.  Another aid to dealing with that is using individual THHN wires in ENT (&quot;smurf tube&quot;) between the fan and its light switch box; that way, you're no longer constrained by cable configuration limitations.