ok, so here we have one more revision to the design.
Tweakscale had a bugfix update which changed the lowered the drag on the scaled up parts and made the ship burn up in the atmosphere.
I tried a bunch of different solutions, but the real problem was that the aero fins at the bottom were too large and had too much control vs the body size.
Smaller fins worked, but they could not provide enough drag during reentry.
Finally I decided to just move the fins to the center of the craft which allowed the aero surfaces to do their jobs closer to the center of mass, and that works great.
I also took the opportunity to extend the cargo bay, as large as it was, I found it limiting on some of the Tundra parts from MKS and could not do the things I wanted to try.
The other problem I had was that the crew elevator relied on too many moving parts and could end up flopping around in the atmo, even through it was clipped inside the vessel.
I tried a dozen different designs on the elevator, there are several problems to work around. Kerbals on EVA have no friction so they can't stand on a moving platform. You can get around this by making a 'cup' like structure. Kerbals on ladders can still create physics interactions and can have weird things going on.
So here we have the final design. no more clipping into the ship. we take advantage of the taller cargo bay and instead of having a cup we just have a platform, and instead of ladders or standing we have seats for each of the crew. We also resolve the issue of the elevator getting turned at an odd angle when it gets retracted back up. With this system the crew should be able to get around the seats no problem. At the end of the day the previous crew elevator was 14 parts and carried 4, this is 10 parts of the elevator, and 8 for the walkway, the struts are not technically needed, but look nice.
This "final" version is 75 parts, with the booster increasing it to 94. I also have a MKS life support module that I can stuck under the fairing to give it a few months of supplies and habitat.
The craft file should only require Stock + Tweakscale + KAS
The Life Support module needs MKS suite.
KShip Life Support.subassembly