If I may, 12 yrs out of flying is not insignificant. However, it is NOT a show stopper either! I was in a similar situation when I got my J model couple years ago. The flight skills came right back and your previous Mooney time will be helpful.
Older 6-pack panel planes are looking affordable. That's what I got when I purchased, IFR capable and steady, she is my weekly commuting plane. But new avionics is needed for sure and I don't see the 'suits' in DC retracting any of their plans these days.
Since I learned on and flew carrier jets with 6-pack type panels, I have upgraded my J with some new stuff but essentially kept the retro look in place. GTN-650 with a squitter ADS-B out transponder, new audio panel and finally got the JPI monitor as well. Took out some pretty old stuff that isn't supported much anymore, that opened up space and now have a mini I-Pad mount in front of the right seat I can use that with a Stratus 2 and get the Wx, traffic, and an emergency AHRS if I really need it in a pinch. Can't give y'all a pirep on it yet, cause crankcase needed a repair and won't have it back for another week or so.
Guess I'm just not that into the whole glass thing yet.
We have to preach GA to keep it alive. Good going Mooneygirl! I have been doing occasional Pilots-N-Paws missions withou any problems. (Use car seat belt leash and seat cover in back seats, no problems, no crates thus far) It puts GA in a good light. I know there are other ways to spread the 'karma' and emphasize GA, so I encourage looking around. Heck, I even got my sorry mug and a rescued dog on the front cover of Hilton Head Monthly this past July standing in front of my J.
Good luck and fly safe.