You will basically just be grandfathered in because in 2021 all Physician Assistants will HAVE to have a Master's degree. Sure, you'll be restricted from working in some states or some areas in those states but it is the same benefits, same responsibilities, and same pay for the Associate's Degree as with the Master's. Could it affect you getting a job, maybe, but to be honest you are just as certified as the PA with the Master's. I believe experience is what will matter most.
Would I recommend getting a PA? Yep, that's what I'm thinking about doing. Once you get your associate's and start working you can always just bridge over and get your Master's from one of those online universities, there's several of them.
But it's up to you.