Some years ago (rather a lot, actually), with a grand total of 35 hours all on Cessna 150s, a shiny new PPL and not having flown at all for 11 months, I arrived at a totally unfamiliar aerodrome to 'convert' onto a Cherokee 140. I did a single 1 hr flight, then a 10 minute solo - and that was all.
You have over twice the total I had, plus the benefit of more comprehensive training and you are also in current flying practice.
I therefore fail to compehend how your Cherokee conversion could conceivably take more than 1-2 hours at the absolute maximum.