I know a new version will be released soon...(So Excited!!!!) but I wanted to share a bit of my experience.
First off, thank you Cluster and Mad Monkey for this amazing program! LOVE IT! I have been following this forum for a while now and learned so much! There are so many great videos out there, as well. So keep it up guys!
I currently have 65 NES roms(working great!) and RA(not sure of which build but I never had to copy or edit the init file...) running 15 SNES and GEN roms. Plus NES's Batman ROTJ as well as Kid Dracula

This number of games is what I have come up with after many trials and errors... And so far very happy with it! Being able to play Sonic, Splatterhouse 2, and Mario Cart is amazing!
One key piece that I had either seen on a video or here somewhere hidden in the forum is renaming the name of the RetroArch game in Hakchi 2.11. I used 1RetroArch so that the game appears in the first folder. Though this only worked with 2 folders and 35 games per folder. However now, I have the maximum games displayed set to 90, so that ALL the 65 NES roms and the RA app show up. No folders. So far So GREAT!
And yes there are plenty of already used Suspend states in use.
I hope this helps someone.

Good luck and please keep on making great stuff for us!