Thanks for all the great advice.

Does one strive for the 85-90 RPM cadence while climbing or is this not feasible?

I'm thinking as a new rider i must build an aerobic base. Likewise I must develop lower extremity strength. Assuming one has excellent leg strength is a 90 RPM cadence while climbing now an aerobic issue or is a combination of aerobic as well as strength as an incline is involved? Is this cadence even possible ?

Interesting stuff. Every day is an adventure.
RE: gearing. I have a double chainring. Not sure of gearing. I don't think i need to change it out as here in N. Florida we have nothing like Pike's Peak but it sure feels like it at times. Likely just need to get "bike fit'.