[RTSE176]

Thanks in advance guys , I have some questions about the bike . I just got it , has 35 miles on it now , and here are things I notice already needing improvement .
1) Def needs a different carb , I can tell it’s lean , runs like crap when cold , pops / stalls . What has been a good bolt on carb for it ?
2) Front forks / shocks are OMG stiff , even hard to actually get them to move or compress ! As does it the rears . I’m only 160 , Definitely need to soften this thing up. Change oil in front forks ? New rear shocks ?
3) Going to go to the 120/90-10 larger tires , do I re-use the original tubes ? Or need larger ones ?
I’m already on fixing the slop in the rear swing arm with the Delrin bushings .
Thank you again , looking forward to some feedback