I should not that J-Customers are more than a normal production guitar. The finishing work on them is done by hand, and as I've said the fretwork on them is some of the best I've ever seen, a cut above all three of my current sevens which are 2 early UVs and a 2027.
I'd still go with the KxK (and obviously did as I have one being built).
Samer unless yours is the natural one that looks pretty much ready to ship I'd say you've got more than a few days
And if it is the natural one with EMGs