Id go for the Stan Shaw apporach and drill everything. Headtube, BB and other places you can get away with and not interfier with the frames stregth. Preety sure itll void all warrentys though .
Also id of thaught the maxxis welterwaight tube would puncture every 5 mins. If it was me I wouldnt be overlyy fussed about saving waeight with the back tyre and tube, nothing more anoyying than fixing punctures out on a ride.
Other than that i love DOB frames good choice!
EDIT: If you do decided to get the drill out, probaly worth getting it done probaly!