You're getting different size recommendations cause some people don't know how to size a board. If you were the average 6fter you would be on a 155. You're not. You're skinny. Weight is more important, though even for park 149 is a little small. Shoot for around a 152.
The best sidecut on a park board I have ridden was the Flow Era. They use a mellow/tight/mellow/tight/mellow breakdown making the board easy to cruise and not twitchy at a slower speed, but still able to rail a turn. It is a center reverse with minimal camber in the tips which is a personal preference thing for jumps. Some find it too loose.
Something you might like better for jumps is the Signal Omni. More of the control is right under your feet instead of between like the Era giving you a nice stable platform. It turned great, was forgiving with the rocker in the tips, but super fun to jump. Not as good of edge-hold though.
Third is the Flow Quantum, Scotty's board. Camber with mellowed out camber in the tips to focus the pop closer to your feet. Super poppy, he uses it in pipe which means the edge hold is good, and most the team uses it as their jump stick. Not as playful or forgiving as the other two.
Go ahead, drink that kool-aid.
FS: Forum Sauce 142 $200 plus shipping
FS: Flux SE30 $75 plus shipping