I have a stock Spyder Pilot ACS.?

so besides a loader, which i will prolly end up getting the Kingman Fasta 18v loader, wat other upgrades should i look into getting? barrels? elbows? trigger? any thing else u can think of. also, if u can, plz tell me where i can find the upgrades and parts that u list, links r very appreciated, thx 4 ur time