Appreciate the reply, plenty of resources I haven't come across on my own.
I should have also mentioned that, yes, I will be going bigger bore and higher compression. This isn't a project of practicality, but something to challenge myself and have fun tinkering with.
I knew there would be some form of RPM, I just assumed it would be a massive pain to access, but I guess I'm here for that. The extra single horsepower on a bike that's probably only putting out seven at this point would probably be noticeable.
Once again, thank you very much.