Consider this idea: your kit is composed of 4 main parts, the turret, the two track-covers on the sides and the main chassis. You leave as-is the first 3 parts, and reduce the chassis to only the top and rear plates, that is you cut away both sides complete with tracks, bottom and front.
The resulting reduced chassis parts can be grafted on the body of a plastic modern tank kit in 1/72 scale, let's say for example Revell's Abrams, which roughly should be the same size.
You should print a lot less that way, and even adding Revell kit's cost, overall price should be reduced and end result enhanced ...
Just ideas, obviously :)