Update, jumalauta!!
Temporary nut for the moment, I need to do a lot more finish sanding on the body, level and dress the frets and fret ends, but everything lines up perfectly. Need to pop springs under the pickup screws as it's currently locked down to the body with a gap of 6mm-8mm which i'm sure I can reduce! Jack socket needs routing in (side jack, Strat-style bent to the edge contour). If I feel saucy enough, I reckon I can drop in a couple of extra frets too :-D
The string gauges are .065, .054, .042, .032, .024, .016, .011, .009 however I may increase the F# and B string gauges to .66/.68 and .56 respectively to maintain tension and tonality, or just go the whole hog and increase the "standard 6" to a .010 set and go for the .68 and .56 on the lower register....best get the instrument dressed and polished first before I go there!