Sorry but for that kinda change, any Mathews trad bow wouldn't even make it on my "long" list, let alone my "short" list of bowyers to choose from for a custom build...
The bow should be functional, and it should shoot better than you can, if properly tuned, and it should serve you well. But it is still a "factory" bow in the eyes of many here. And most (including me) are skeptical as to what "custom" means from a factory bow.
Now there is nothing wrong with "factory bows", per se, but the majority of people here, as evidenced by the above comments, would pursue other products first...especially if a "wait time" is involved for a truly hand-made, "customized" product. And that would include choice of woods, limb cores, veneers, clear glass, custom string, grip shaping, limb tips, overlays, riser flares and accents, and tillering to within 2lbs at any given draw length.
Mathews doesn't advertise a "Sky Trophy Longbow" on their site, but I do vaguely remember they purchased the rights from Hoyt, and I think you're referring to the "Heritage Hawk", which is their r/d model with upgraded woods. At least I hope so for the $600.
So if it's on order, enjoy it! If it's still an option to cancel, I'd do some research on here, search for "mathews" and read about all the other options available, and then make a more informed decision.
Most of us here make an extensive effort to not "bash" any products or the choices of others as to what they shoot (heck, I shoot a truly bastardized WARF that's ugly as the day is long, but will flat out SHOOT!), so I think you get the gist of the conversation...
Take Care,
Marc