Penis pump

Hey guys, I've got a question about what to buy. I see most people recommending leluv pumps so thats what im going with. If you think i should look at something else lmk. I am 9x6 inches at my thickest but most of my dick is between 5.5-5.8 girth. What size pump would I want to buy? I assume it wouldn't be wise to get a 9 inch tube, but is there any issues with getting the 12 inch tube? The 3 inches of space won't be an issue will it? For thickness i assume id want to get the 2.0 tube or would a different size be better?