Glad to see you are extracting some joy from flying your humble 150, Sky. That's about the smallest airplane one can equip as an IFR platform, and most would not take into real IMC (including me). Does yours have a glideslope?
I do all my IPCs in piston singles and also did one last week in a 206H with steam gauges and dual Garmins. The 206 panel is big enough to have a lot of instruments like an HSI, dual glideslopes, three nav/coms, backup attitude indicator, clock, three GPSes, etc. I do a mix of precision and nonprecision approaches, backcourse approaches, holds, hoodwork, etc. I actually am always current on instruments for work but the company likes to pay for separate IPCs in piston singles. I find VOR approaches with no GPS and a strong wind factor the most challenging.