Hello, Dan, and welcome to the club. I fly a '65 E model 150. I have no navigation radios. I'm strictly VFR with a transponder and single comm. I don't fly IMC in the 150. So, I do not have an operable directional gyro or attitude indicator. I don't even have an operable vacuum pump. What would it drive? Nothing. That hasn't stopped me from flying all over the country anyway.
So, vacuum systems and IFR instrumentation may come along later. But, for now, enjoy flying your new baby. Congratulations.