Very nice !
Your rear tire setup looks about like mine, and I did nothing to the rear wheels at all. The fronts needed modified due to flexing only. I just flexed the chassis to one side and dremeled until it didn't rub. Then I did the same for the other side.
I really like your idea of the furniture in the back. I had thought about doing a wall for the switches. I have 3 in the back. When I installed the light kit, I didn't want the headlights on during the day, so I spliced in an on\off switch to control them. I have the esc mounted at the rear, so there is the switch for that. And finally the roof rack lights have their own switch because those run off of a 9v battery. Basically, whatever I want on or off, I just open the hatch and flip the switch.
My battery is mid mounted in front of the tranny. I wanted the weight upfront but didn't want to remove the body every time to connect, so I just hacked off the "tub" and left the front windows open.
I really wish I could have found a viable excuse to use the gas door. I thought maybe a mp3 plug-in or something. I really love the opening gas door !!
Here are 2 pics of my fronts.
and here is how the rear of the frame mounts up. The front does the same thing, keep in mind I am missing the "tub"
When I modified the fronts, I used the sanding wheel attachment. my dremel has a speed selector knob, I think it was on #4. If you do need to trim the front wheel arches, I suggest you do it completely after the fact that way you trim the upper portion of the wheel wells to match.