Hello! I own a few quality springs and am looking to buy my first PCP rifle. I am considering a mid-size carbon fiber air tank (~70 cu ft) like the Omega or Tiger Shark. Does this seem like a good option? A hand pump is out of the question for me, and I like the idea of the portability and ease of use of an air tank. Any downsides that I am not taking into consideration? I appreciate your help!