Your design takes the 15° ball and runs with it.
Some points though
There is a positive pressure gradient the front and a negative one at the rear. So the front can be bluff. That shovel nose isn't important until ~250mph.
Your extended approach and departure angles work against you aerodynamically. The problem with the symmetrical side view is you have free air above the car and a plenum with one moving wall (whichever way you look at it) below. So you have interference drag at any reasonable ride height.
Theory has the vehicle as a half-body, with a 'ghost' vehicle inverted under it. Underbody flow is minimized and managed with tunnels and difussers.
I would describe your rear end as a high-tailed stinger. Here's an example from Breers in the 1930s:
I compared the high boat tail with a Tropfenwagen style here:
The one on the left uses a Coanda nozzle in the truncation because the Beetle has a supply of pumped engine cooling air ducted to exactly the right spot.
Flat taillights would loose maybe 0.005Cd. and maybe 12-15" in length.