In the meantime, can you please write down detail diff between Rodimus and stock?
Rodimus, Stock + Xionia, and Aphrodite and pretty much all all other 2.2 roms use Xionia 005. After that, things got more complex trying to use it.
Stock + Xionia is just that, a stripped down, fully working stock rom with Xionia. Think of this as the father of most 2.2 roms. This is good for those who want minimal change from the stock rom. A clean, overclockable stock Virgin rom minus bloatware.
Rodimus is a stripped, themed rom with Xionia, a good one at that. It's good for those who want something different with minimal hassle. It's an alternative to Stock + Xionia.
Aphrodite is a bit different, this is not a pre-fabbed, ready to go rom. It's Stock + Xionia, minus everything that could be removed without causing trouble but can be easily replaced. There is no theme, few ringtones, no wallpaper, no boot animation, no Maps, no search, etc... It's bare android with Xionia. If you know what you want to put in and are willing to put the effort in, this will be the smallest rom (all should perform similar). Keep in mind however, that Aphrodite is the new rom on the block, it doesn't yet have the userbase to verify everything works like these other, more mature roms do. There could be a major issue we have yet to find.
I'm not out to steal people from Rodimus or Stock + Xionia (I have the utmost respect for Mmmark111 and RevolutionRed and their work), but considering what you are doing, Aphrodite may be your best bet. If nothing else, give it a try and see, you can always go back. Even rom builders play with other roms.