So here is where I am with your setup, I have 21cc SRX domes, but that really isn't the correct dome for your application. You really need to run the Viper domes if you are running a viper head gasket, or at least only a partial viper gasket. Your squish band is going to be too wide and could promote detonation. The srx domes have a 0.035"ish squish band and the viper gasket is round that I think, so you would be up in the 0.060 - 0.070". IMO that is to wide. That is one of the reasons I made my own domes, to play with that band. I have viper domes in the 22-23 range, I would just have to cc them as I do not have them marked. And that isn't happening today, I would need to go get a piece of plexi and trim it down to work. I do have some MPI viper chambers, I would just need to clean some aluminum off them. are aren't hammered up like yours is. I melted a handful of pistons on the exhaust port side and some deposits were left in the chamber. This was with some heavily ported and port raised jugs. Needed more compression, race gas, and my small chambers, but was trying to find a livable trail setup. Needless to say, I didn't.
