"Anyone out there have any recommendations on what ammo will give me the least amount of trouble out of this little guy?"

At first, stick with anything made by CCI. You know, of course, that every .22 is a law unto itself as to what type of ammo/brand it likes best.

After it's broken in, get some sand bags to hold it rock steady and a box of Lapua Midas or Eley Tenex to see how accurate it is at 10 or 15 yards, single action.