Hi, Ned:
Eventually Final 7 is gona stop working so yes, you must learn a new NLE.
Premiere is similar to Final 7 in some regards so the transition is going to be easier than from
Final 7 to Final X. You’ll also find a much faster NLE but also a lot buggier. If you work with people that use the Adobe suite the program’s communicate rather well and also Premiere doesn’t need you to transcode everything to Prores so you can save s lot of time.
So yes, please change. I have a love/hate relationship with Premiere but I hate even more to have to work with Final 7 again.