Closing day what should i try

On sunday its closing day and ive been getting pretty hyped, and just want to try a bunch of shit ive been too scared of doing before. On a tramp ive been practicing lincolns and underflips and im pretty comfortable with them now. As for backflips i can do them off a 2ft ledge onto a mat, but theyre the sketchiest trick for me because mid season i tried one, underotated and fucked my back for 2 weeks... Then on rails i was thinking 270 on, and 450 out. This is just my first season in park but since its closing day i wanna huck shit and see what happens. basically looking for tips & types of jumps i should try these on. Thanks :) Also if you have any other suggestions for things i should do before i try these, let me know!