After some preparation I've started the assembly of the CNC cut parts. They are puzzled together and fixed with thin CA-glue. I bought syringes in various sizes from www.dx.com
, perfect for applying small amounts of CA in the right places. When glued the structures get insanely strong. Both turbine mount and tank mount doubles as reinforcement of the airframe.
Seems to fit well and from what I can tell CG seem to be in the right area too, even with the twin engines mounted far back. Everything is not in place but still good enough to choose this path for the project with fingers crossed [