This lokks interesting: http://subodeon.proboards.com/index.cgi?board=ships&action=display&thread=1962 Over at starshipmodeler.net, there is a model kit builder who was working on a ship called the Charger that had similar nacelles to yours http://infinityreach.multiply.com/photos/album/12/USS_Enterprise http://infinityreach.multiply.com/ Look for his "Charger." The TAS Enterprise seemed to have a longer shuttlebay. You might want to do that next, seing that the animated Enterprise seemed to have a slightly different build.
While you're getting started on the saucer... may I reccomend you move the arboretum up there? It could free up some room in the engineering hull for... engineering stuff. And there's already plenty of space to spare for the crew in the saucer as is, as many posters here could likely attest. I'd reccomend the saucer rim, the B/C deck bulge or the spot originally indicated for the rec room by The Probert (LINK).
More nice inspirational work here http://infinityreach.multiply.com/p...ery,http://trekbbs.com/showthread.php?t=92307