I've already started construction on both of mine, but if you want to clone one there a few options
1) I created openrocket files for the main fuselage and pods that I used actual measurements and weights on last year. It should get you pretty close as far as the form of the 1250 goes (i gave up on trying to simulate flight correctly, only wanted to make it clone-able and ready for upscale), especially since decals are not a requirement.
I hope that someday not too far off we'll have a well organized cottage industry of 3D printers offering all the plastic parts for popular models like the Interceptor in all of its forms.