Things I would do a little differently:
I like the round navigational deflector array on the Sovereign/Ent-E better. The Sovereign's nacelle pylons are nice, too.
First, thanks for the comment.
I don't really care for the round deflector. It suits the ENT-E hull shape though. The shape of the ship's deflector comes directly from the shape of the engine hull so putting a round deflector on the Quest would be a bit odd looking.
Personally, I find the ENT-E pylons a bit on the chunky side. Not bad per se, but they're such a radical departure, with those huge vent-things.
Make the ship's nacelles a little longer, and definitely thinner and trimmer with a more smooth rectangular solid shape.
My nacelles are much bigger than the ENT-D nacelles (like twice as long), but slightly shorter than the ENT-E nacelles. (see image below). They are supposed to be more angular without being pointy, that's what I was trying for anyway. I think my pencil slipped - I was doing these freehand - anyway, the nacelles look a little 'bent' or something.

Retain the basic shape of the saucer, but inject a little of the simplicity of the original NCC-1701, with a smoother hull that looks less busy. And use the block lettering style for the hull markings, like TOS did.
I don't know about the TOS font, but I think SF could use a change in font, they've been using the ENT-Refit font for like 100 years by the time of the ENT-E.
Here's a comparison, (ENT-E from SFFF):
