00 Malibu Couple of questions

Hi everyone! I have a 00 Chevy malibu 3.1 v6 with 110k miles on it. I have a few problems with it, nothing major but it could turn into something major without fixing it.

1st problem:
My car when I first start it sometimes will if I put it in drive and start driving if I have to idle the engine will kind of seem like its almost trying to stall (it never does) it only happens within the first 5 minutes of starting it up. I have recently just waitied for the car to warm up a bit before driving it and that helps alot, it never does it when its warmed up.

My second problem:
The other problem is when I am driving from about 45-50 mph and 65mph and higher I get real bad vibrations coming from the front wheels, I also sometimes get the vibrations in the back wheels as well. Something also pops in the back suspensions when I go over speed bumps, it was not really noticiable before but it is starting to get louder.

Any suggestions are greatly appreciated, I am pretty handy with cars but don't know where to start on these two problems. Thanks alot!