Welcome to muzzleloading! :hatsoff: You're gonna like this.
Good idea to ask the guys here instead of the guys there...
You didn't say which model CVA or what you plan to use it for.
If you plan to use it for hunting I'd start with about 70 grains of powder and work up from there. For just target shooting I'd start at around 50 grains.
Either way, shoot a 5 shot group and then increase your load by 5 grains and shoot another group, etc. etc. etc. until you find the load your rifle likes best.
Try both 2F and 3F. Some rifles prefer one over the other.
A .490 ball will most likely suit your needs. A .495 ball is another option.
For round ball shooting you definitely need a patch. Start out with a .015 patch and see how they work. You might need a thicker or thinner patch. If the patch gets blown or burnt up try a thicker patch. If it's way too hard to load try a thinner patch. You should be able to find your patches on the ground about 10 yards +- out in front of where you shot from.
Lubes are many and varied. Store-bought, home-brewed, spit... I'd suggest to start with pre-lubed patches until you get the hang of everything else. Then buy patching material by the yard, tight weave 100% natural material measured with a caliper for thickness, and try different lubes. For target shooting spit is real handy, for hunting I use a grease type lube.
Most likely you will need #11 caps. If your gun was used I'd just go ahead and buy a new nipple or 3 now. Then you'll know for sure. My favorite are the Remington #11 caps. Others prefer CCI, Winchester, RWS, etc.
I highly recommend real blackpowder. It cleans up easy with water and is very reliable. I use Goex brand but you could try Kik, Grafs, Swiss, Shutzen, etc.
If all you can get is a substitute, that should work too.
Do NOT use any smokeless powder EVER in your muzzleloader!!!!
Have fun and shoot safe.