The weight difference for a fully fitted PA-12 and Compass is 41#'s according to Hobie's published info. ( 128#'s Vs 87#'s)
With all the stuff you have added to your PA-12, I bet you have an additional 20#'s on top of the 41#'s difference......so closer to 148#'s total.
If you were to add the same additional stuff to the Compass, the weight grows to about 107 #'s total.......still a 41# difference, but definitely easier to handle.
I think it's still a handful, if you want to "carry the Compass" by yourself...the bulk size is a issue and add some wind to the equation, this get worse quickly....I say this because my first Hobie kayak was a 2010 Outback I bought in 2009 and I hand carried it a couple of times....it was not easy and before I injured myself, I abandoned this method.
If the distance is not too far, is it possible that you could use a block and tackle, anchored to your vehicle and slide the kayak down/up the side of the road?
A cheap carpet runner would protect the bottom of the hull.
You already have a significant investment in your PA-12 and it sounds like you are happy with the fishing platform once on the water. I believe you would take a financial hit moving to a Compass.
If it we me, I would try to find a way to launch and recover the PA-12, over the terrain you want to launch from.
I have a PA-14 and transport/store it on a Hobie Trailex trailer......My PA-14 is about 180#'s fully loaded and I had to mount a winch, to help recover the PA where the launch spot is very steep. I recognize that using a trailer limits launch spots and "so it goes"