Just a quick one on the supplier questions:
David Dyke - Quite expensive, but you get what you pay for. Personally not used them myself but heard good things
Touchstone Tonewoods - Good bloke on the end of the phone, quick and easy ordering. Fast delivery, I've used them 3 or 4 times now and no problems as of yet (except for me ordering 1 less dot marker than I needed ).
www.axesrus.co.uk - Cheap. Never order from them but no doubt I will, they seem quite good.
Craft Supplies - No online luthier stuff (that I know of) but phone them up and they'll send you the Tonewood Catalogue. Quite cheap and I've used them prety much exclusively (gonna use them more because my mate plays bass in the bosses band - so hopefully sooner or later I'll be able to blag some free stuff )
I think that's your major ones, just shove the names into google.
****I HAVE NO EXPERIENCE IN THIS, SO GET IT CONFIRMED FIRST****
We'll as noone else has replied, I'll offer my bit on the dot markers...
... Remark the position of the hole and drill it WITH A HAND DRILL. The depth of the markers are only a couple of mm's.