Welcome! People's results with pellets vary a lot. In general they are not recommended because they are expensive and you can't "tailor" your load in small increments for the best accuracy. Personally, I never got good accuracy with pellets, but I know a lot of people who HAVE gotten very good accuracy.

I will also recommend the TC see-through powder measure, I have used it for many years and it is simple and works well. Cleaning supplies, I've used all sorts of different brands and haven't noticed huge differences between them.

I have a couple CVA inlines, and they shoot a wide variety of sabotted bullets well once you find the right powder charge. I would suggest starting with the 240 or 250 grain XTP with 100 grains of pellets if you have pellets on hand. If using loose powder, I would start at 80 grains and work your way up in 5 grain increments until you find the best shooting load. Another bullet that groups well in many rifles is the 250 grain SST or Shockwave. I have also had very good luck with the 200 grain Shockwave- both in terms of accuracy and in terms of putting deer down quickly. Hope this helps!