When I first started building and shooting PCP guns I bought a little 100ci ninja tank and filled it, my smallish tanks and guns with a hand pump and later as my needs grew at the local paintball shop. But once I became more firmly addicted, got an Impact, I bought a Yong Heng compressor it filled my 100ci, the Impact and the smaller tanks with ease. A bit over a year later the addiction made me purchased an SK-19 and I needed to shoot even more so finally invested in a 100cf Great White tank set up. Now I finally have enough air so I don't have to worry to much about running out and having to cut my shooting session short. Give yourself a bit of room for expansion buy a small compressor or a larger tank than you think you need it will save you money and heartache later on.