Hi and welcome,
The good news is you've got a shooter as is....but it can become better.
General agreement says a RSA trigger system is nearly mandatory and the biggest improvement on any AK47. So check RedStarArms for that, they also sell a good replacement for the shepherds hook that holds down the pins internally.
The furniture itself if it works for you doesn't need immediate changing, you can opt for a NATO lenght stock trough Kvar or replace the existing stock set for a polymer one in any available color.
You can add muzzle brakes to your weapon.
You will see that accessory wise, the AK offers just as much as any AR15.
Magazines, get magazines. Especially good 30rnders. A drum is nice for rocking and rolling I quess but rock heavy if firing off hand standing.
How about posting some pics in the my AK thread, which is somewhere along page two here.
Good luck, and good shooting
Bas