One important this to remember is that different barrels have different bore sizes, and different paint has different sizes as well. The best thing to do for your "accuracy" is to ensure you have a close match between the bore size of your barrel, and the average size of the paint you are using.
Barrel Bore Size:
Lots of people invest in a barrel kit, offering them interchangable bore sizes, to match the paint they have readily available. The best thing to do in your case is figure out what type of paint you will typically be using, and then find a good barrel to fit that. There are several good barrel options for under $50, making this a relatively cheap upgrade.
Also - safety first! Make sure you and your boys keep those goggles on at all times! And use your barrel plugs or condoms. It may seem silly at first, but you'll soon find out how easy it is to have a miss fire in the staging area, and you'll be glad you had your barrel plug in when you do!
Welcome to the sport, and welcome to the forums!