@JES - Thanks
I will however keep these versions with perpendicular or non-angled pylons as it's another design cue that reminds me of the TOS Enterprise. When viewed as a silhouette it makes it easier for me to pick out something TOS-like vs a later movie build with the angled back warp pylons.
@SchwEnt - Hmm, I'll google Horizon, the Tritium, the Baton Rouge and take a look...
edit - after looking these models over, I probably won't try anything with those, at least not until I get a better feel of what pre-TOS looks like (and I'm not thinking the Enterprise TV series.)