Don't know when caps will be available? I expect in some areas they are available, and in others, they're not. I own both cap and flint rifles. I like them both, but enjoy my flintlocks the most. Flintlocks are reliable if one is willing to learn the firearm they are shooting. It's really no different then learning the operation of a cap lock. The key to both is quality locks, and not junk locks. I've gotta give a plug to, Chamber's and those Siler locks, both flint and cap. This is quality.
In the last 60+ days I've taken around 80 or so shots with my favorite flinter and haven't experience any misfires/hang fires, and we've had uncommonly "humid" weather conditions over this time period. High humidity and moisture just about every day. This is also with a Black English Flint that now probably has close to 120+ shots fired off it. It's been in my rifle since last winter, only because the last flint with about 80 to 100 shots on it finally gave up the ghost.
So yes, I really like flintlocks over cap locks, and that's directly related to installing quality locks on my builds.
Just my two cents worth.