I recently rented a 48" full cat-1 rake with gauge wheels for use with my gc2300
I found I could have easily pulled a 60 , (and a even 72 if not in heavy roots or large buried rock).
But, I found that the "low profile" nature of tractor resulted in the rake tines to be a non optimal angle when grading (floating between the wheels and the 3pt). The front end of the rake was too low, causing the tines to sometimes rise over the material being carried. Additional the material would not always "roll" in to a windrow.
The above conditions seems to be solveable by adujsting the top link and the hieght of the gauge wheels. However this resulted in the lower arms being at a higher postion when the rake was engage with ground. This resulted in reducing the ground clearance at max lift. This was an issue in the terrian I was working.
Low profile rakes appear have shorter tines, and would likely have addressed my situation.
Moral of the story: If you can rent the rake and try it
BTW. That Supply Chain (TSC) store sells low profile rakes at a lower cost then you quoted , but the custom order gauge wheels makes your price competative.