Nice! Looks cool.
(I could point out that a ship which can slingshot around the sun at warp 10 could probably handle getting to orbit without needing any help, but who wants to open that can o' worms?)
Nope...the original ENT was never designed to be aerodynamic. Can't fly or maneuver within an atmosphere. The saucer was always said to be separable, which is why they did it in the pilot of TNG, but even THAT only had limited maneuverability within an atmosphere (see the big-ass wreck in Generations).