As far as being able to ignite the powder consistently, all you need is SRP. For ARs SRMP is recommended for the very reasons you are already aware of. Many people ignore that, use SRP, and have never had a slam fire. A few people have had slam fires though. Some people believe that not fully seating primers can add to the problem (or even cause it) so it is not a cut and dry issue.
My thoughts are if your AR will set off a SRMP, which every AR should, then use those for an added safety measure. Some people will say it isn't necessary but nobody is going to say it is less safe than using SRP, all things being equal.
New gun, same ol' shot.