Thank you for the advice! I will look at modifying the design to reduce drag on the back. I will have a full galley on the rear. I am planning on finishing the exterior with the cotton canvas/resin (ghetto fiberglass) method. One hangup I have had for a long time was that the larger dimensions I wanted required several seams in building materials and exterior finish materials. I think the canvas/resin method - then professionally painted will be a great solution to my problem.
In regards to the front(nose) piece. I have designed my own version of a CoolerAir system that uses 6" PVC pipe, a DC fan and some PVC fittings filled with a handful of solid frozen water bottles. My plan was to use this space for this (and other) systems. Since I am building off a 10'6" trailer platform and that portion actually protrudes out in front of it, I am plenty good with my remaining floor space.
One other pretty unique thing that I have stumbled upon is a website called (I didn't name it)
http://www.RASTERBATOR.net. A "raster" file is an image file that can be blown WAY up. This free websight gives you the ability to take a simple picture, or in my case my design - and blow it up as big as you want. What you basically get is tons of pages coming out of your printer that you can tape together and see a 1:1 ratio of your design. Here is mine in my basement (ceiling is 8' for reference). It is a fun way to better envision your build in real life before you get the chance to actually begin building it.