To me, density or the appearance there of is more important than coverage persay. With that said, if I had your pattern I would opt for a (very) high hairline with good density. This is just my personal preference. Your other option is full coverage with thin, somewhat see through hair. To achieve both full coverage and good density is pretty unrealistic I think but then again I haven't seen your donor. Some guys also compromise with a good hairline and middle but let their crown go. Would any of these options satisfy you? If so, I'd say go for it. spend some time researching people's results with 4-5k procedures to create some real expectations for yourself then decide.
Ps, I am an avid gym guy as well. I'm convinced creatine is pretty toxic for your hair or at least was for me. If you're on it, you might consider discontinuing to help stabilize your pattern in addition to hair meds.