I must say the most sense Anybody has made on this thread is Intruder.
Forget MSA's. Maintain 8000' until established over the IAF. if you need to descend before the IAF then request it from ATC.
I haven't seen the approach plate in question but from my experience in similar situations the controller clears you to an altitude that will allow you to conduct a Continuous Desecent Approach anyway. If they mess up and bring you high then ask for lower. simple as that.