Really if the bars are just bent you can bend them back... happens more often than I like to admit in the woods on my bike. :lol
New bars (if they are super bent beyond repair) are pretty cheap too. The only thing I would check is the steering head bearings. Just make sure there is no play.
Sounds like dirty carbs/fouled plugs to me. There is probably a good site detailing carb cleaning/rebuild on that bike somewhere. Most are pretty similar though, IDK what your mechanical level is but as long as you remember how you took it apart they are not that hard to put back together. Could also be a fuel pump and/or filter issue, did you leave old gas in it all winter? That can cause all sorts of problems.
I would check the plugs 1st, if they are fouled sandpaper them clean and test that. If they foul again check your choke cable is actually disengaging the choke. If the choke is working and the plugs continue to foul look at the carbs. 1st get some cleaner and just take the airbox off and clean them on the bike. If that doesn't work get a rebuild kit (new jets, seals, float if you have one) and learn about carbs.
If the plugs look good, it is probably a fuel supply issue. Check the fuel filter and replace if clogged. Don't forget to also check/replace your air filter. It can be blocked and causing the bike to run rich.
God bless fuel injection and auto choke!