CXX I wouldn’t consider to be a finesse line, seems like it loses its opaqueness over time, and its high abrasion resistance isn’t needed from the op. Great line but gets coily from my experience on spinning.
Finesse is flouro, since I’ve gone to braid on most my rods I’ve experimented with many type of leaders since i almost always run a leader, including mono, flouro, copolymers, haven’t noticed any difference on bites for open water. Any 6-8# I roll with. Usually match the line color if I can to the stain in the water. CXX or triline xt low vis green good for rivers and stained water, clearer lines for clearer water.
Flouro shines for ice imo, splice knots are too much of a PIA for open water