I guess it depends on when you set your ship's design in relation to when Starfleet made the 'great change' in starship design, weather or not you wish to agree with Scott's Guide to the Enterprise (SGttE), and what kind of relationship it has with the Enterprise refit.
Though not entirely canon, I do like to use SGttE as explanation for most of the changes going into refitting the Enterprise. For example, the reason for the new struts, apparently, is because of the greater power of the engines. The originals (FWF-1) didn't have their full potential of power as they were designed to propel the secondary hull on impulse in the event of a separation. Thus, the TMP nacelles (FWG-1) were designed purely for warp travel and had greater power, thus needing a stronger connection to the hull.
In fact, the text also mentions that with the engineering hull no longer serving as a lifeboat, that entire area was redesigned to function purely as an engineering/utilities space. All crew quarters and rec facilities were eliminated there during the refit.
Basicly, what was supposed to be a simple engine-swap and refit turned into (in Enterprise's case) a complete redesign. This doesn't exclude the possibility of other refits and test fits, though it does say many systems are exclusive to Enterprise, as she was the first refitted of her kind.
The "Light grey themocoat" was removed from all ships 90,000 metric tons and above when Enterprise was being refitted- to save weight and because everyone liked how the hull looked.
This doesn't mean shouldn't do whatever you wish to do with your model, but for the sake of background information and what the book has to say, I present these facts.
Whatever the case, the ship is spiffy.
EDIT: Well, according to SGttE, the type faces were changed over to "Star Fleet Bold Extended" in 2210. Microgramma, and Microgramma Bold extended were other fonts used for interior designing, pannels, and so on. Presumably this was when markings were also switched over, if not shortly afterward.