It’s not an exact science, but @BlueCollarTr8n once suggested a rule of thumb for looking pretty awesome: Shoot for 3 pounds of bodyweight (in lean but not ripped condition) per inch of height. Sounds about right, and it’d give you a goal of a lean 240. “Lean” as in seeing ab definition at that weight, but I think BCTr8n originally used the term “all abs in” regarding the leanness.
As example, Junior Dos Santos at 6’4" and a lean 240 in this pic would be slightly over that ratio with a 3.16.
This thread talked a bit about it (but then got sidetracked into a classic “natty vs juiced debate”) and it has a chart BlueCollar compiled showing that many of the old school Mr. America winners, who competed lean-but-not-ripped, were almost all in the 2.75-3 pounds per inch range.
The only wrinkle in this approach is that your height is so far away from the standard bell curve, that the ratio just might not apply fully. So here’s a relevant question: What do you weigh now and how lean or fat are you?