Just my opinion and tastes, I like clean graceful lines, but I think the original 427 Cobras with the Competition styling (no bumpers etc) is as close to perfect as it gets. Beautiful clean lines, with no add-on gadgets that detract from the styling. If I were to build one, I'd stick as close to that original Competition style as I could. And boring is probably the last adjective I'd use to describe them!
Your description reads pretty close to my car's setup. Over the years I've re-done it to resemble the full competition Cobra.
original-style 4" round tube frame
FE engine
David Kee aluminum case wide-ratio Toploader with big input shaft
IRS with 3.70 rear
42 gallon fuel tank
dual vintage Stewart-Warner 240A electric fuel pumps mounted in trunk, mechanical fuel pump at the engine
twin batteries behind the passenger seat
6-pin wheels with knock-offs
satin black roll bar, side pipes and quick-jacks
Goodyear Eagle bias-ply tires
The car is red with white stripes. If I ever repaint, I'd stay with the red but delete the stripes.