Just got a new to me z125, what are the first mods I should do?

I just installed a 143cc cylinder and piston (stock head, cam, and throttle body). I have a Chimera intake, Yoshi exhaust, and Bazzaz controller but no auto tune, & 1200 ft above sea level. Can someone upload a tune that is safe for what I have? There's nothing matching exactly what I have on...

Finally got my 6 dollar baffle from china (5 weeks) but ended up not using it . so it turned out to be a 10 cent muffler mod ! ... $ Hacksaw blade usage plus some rat tail file wear and paint . . If i didn't need a after market pipe for ground clearance issues i would be quite happy with this...

New rear shock added 1 1/2" more travel to match my forks mod of 1 3/4" more travel. 10.5 long shock with a 400lb spring and 2 1/2" lowering link worked out (lucked out) great Overall seat height dropped 1/2" from stock height and added 1/2" extra rider sag (1 1/2") so dropped the seat 1" and...

just wondering - full coverage price ? thx