Good choice Andy and on mine the upgrades done later were a new bridge from Real Parts to give a bit more fore & aft adjustment plus the Entwistle PUP's which required a small amount of chisel work to help make the Bridge PUP fit plus also filing and sanding out the scratch plate so that the neck one would fit. Pretty standard stuff but as I said easy enough to do later. Just installed the bone nut 10 days ago too and also another easy job. Agree with Woks about the tuners and when I find a spare $50 might order some from Real Parts.
Obviously all electronic upgrades such as pots & orange drop caps were done up front. Quite a versatile kit that allows for all sorts of upgrades and modifications.
Can't wait to see what you do with it.
Cheers Waz