A good idea, although some of the proportions seem off; nacelle placement for example; however I can see the placement as being workable.
The 'sensor pod', in my opinion should have no windows, as with the TMP counterpart, possibly moved further back, so it projects a little further back than the nacelles.
Very good work though, the windows could stay if this was an Oberth variant, or perhaps these 'pods' are interchangable (Extremely likely knowing Starfleet).