The AR234 was actually quite a small plane. The original versions didn't have room for the undercart even - had to use skids.
Span: 14.2m (46 ft. 3.5 in.)
Length: 12.65m (41 ft. 5.5 in.)
Height: 4.3m (14 ft. 1.25 in.)
It might be an idea to compare it with a similar sized fighter and see if the rendered size compares.
And I've lost 200 perks using flights of AR234s too - which is a real pain.