Your build is looking really fine.
Thought I would update my "prebuilt" auction Laser. Removed the ABS turtledeck back to the leading edge of the stab and built a film covered former and stringer turtledeck. Replaced the vinyl Red Bull lettering that lapped over the old removed turtledeck with Ultrcoat letters copied from the original by doing a pencil rub transfer on paper over the old letters. Came out really nice. Put the rudder servo under the wing and put the throttle, choke, and smoke valve servos behind the firewall. Radio and ignition batteries are just behind the servos. With 1.5 lbs less engine weight compared to the G62, I was worried that there would have to be lead in the nose but it balanced per the plan. The sad part of the report is that the airplane still weighs 22 lbs. Whoever built the model might have built heavy, or perhaps the wood that came in the kit was heavy. Each wing complete with a servo weighs 2.75 lbs.The aluminum landing gear and wing tube account for a lot also.
The point I am touching on here is that careful selection of wood, eliminating non-essential structure, carbon fiber parts and light fiberglass parts make a world of difference when it is put on the scale. You are certianly going down the right road on your build.
Regardless of weight, I am sure my 22 lb'er will get up and scoot. I am looking forward to playing with the smoke system I installed more than doing 3D with this one. The next one will come out considerably lighter with the above points in mind.