I would suggest recent glass time if you’re a steam gauge person. The transition is not insignificant and you don’t want to be learning it in your sims, which presume glass IFR proficiency.

Another challenge I’ve observed in the transition you’re making is the level of automation, which can bewilder those of us whose experience is mainly stick-and-rudder types. Again, not something that’s easy for everyone to pick up in a sim session or two, and falling behind hurts chances of success.

Candidly, I wouldn’t put stock in the “it’s too hard past 50” naysayers. It depends on the person. If you put in the time, focus on the right things, stay positive, and listen, it’s just another airplane. But I’d show up glass-proficient and IFR-sharp. Fly with some airline buddies and ask for their honest feedback, then work hard to improve BEFORE showing up.