I like the MK I Tony. Maybe You could work with SMC and flesh out what a 1976 1977 Titans Enterprise would have looked like on screen. SMC has the saucer as per Ken Adam:
But Ralph's painting has a different saucer. Flatter, rounder at the edge, with the bridge dome farther forward. Many thought this was untrek like, yet the Moonraker station reminded me of Regula I.
This might be where galactica level detail makes up for lack of fluidity. I really want to see those painings brought to life. The only thing to do is to make the long narrow boxy spine taper a bit to form the narrow deflector anti-proton beam thingy to make Ralphs two paintings gel together. The Mk I is actually almost there.