well no esp expert here... but I remember the esp custom shop on sunset blvd in the 'rock walk' in la. have been there many times. just crazy good guitars there every time I went but that was around 95. If I'm not mistaken you could walk in there and say "i want this shape with this carve, these pickups, this bridge in this wood" and they'd do it.
for me... the one that got away was a gibson sg90. it didn't get away as much as it had a headstock break back before I knew anything about fixing such things. guitar just was made for me. the steinberger trem on it was awesome altho the bases were not made well, and it had issues. I will gather what I can from your bravery and someday attempt to remake my 'dream guitar'!