Congrats on your purchase. Now learn how to fight with it. DVD's from One Source Tactical or Tactical Response are a good start until you can go to some training if you choose to take it that far. My other piece of advice is keep AR stuff off and AK they are two seperate weapons systems and while some things regarding shooting the rifle will transfer over operating them is two separate animals.
The AK platform is rock solid and caveman simple. Iron sights are fine but the rear sight blade is a little narrow. You can get a Rifle Dynamics upgrade for your model which includes widening up that rear sight among other things for about $350 which is well worth it. I did mine with a narrow file slowly and checking in between file strokes.
WASP rifles sometimes have problems with canted sights or gas blocks it is an easy fix if yours has that problem. Invest in a decent front sight tool to adjust the sights. Mags run the full circle of quality. Bulgarian circle 10 and US Palm offer the best but can get pricey.
AIM surplus has some good new steel ribbed mags for $9.00 a pop which are good whatever number makes you comfortable.
As far as ammo just make sure it is not corrosive. One reason 5.45 is so cheap most is corrosive and will eat your gun up after a time. Do not be afraid to purchase metal tins of ammo that was made 10-20-30 years ago as long as the tin is sealed you are good. DO NOT lose the little can opener that comes with it or you will spend shooting time trying to open the can.
While I still own and run AR's when it gets bad I grab an AK. I carry one here on a daily basis and have total confidence in it. If you have any questions give me a shout will answer what I can or refer you to someone who can.