Hi Bo
You certainly achieved a lot in one session.
I did some comparisons from the Oxai site
Length. 1993/1991mm
Wing span. 1940/1866mm
Wing area. 59.1/64.4 dm^2
Stab area. 18.3/19.3 dm^2
The first figures are for the Galactika. So the two are quite different. The canaliser of the Galactika looks huge. The Galactik canaliser measures 600mm span and 317 mm cord.
I put the rudder servo in the tail but used the Futabs BLS173SVi which is only 28 grams so saves 20 grams. It still has 7.6 kg torque at 7.4 volts. I have the Mezon BEC set at 8.0 volts so torque is probably closer to 8 kg which is plenty.
I have a 450ma lipo connected via a switch to the Rx. No reg or anything thing else so the BEC keeps the Lipo topped up and the lipo provides a back up in case of a BEC or main battery problem.
You could save a few grams by removing the back up guard and the robbe/Futaba current sensor. It would put you under 5000g and you might be able to add the wheel pants. Planes just don't look right without wheel pants. The Mezon gives lots of info via the Jeti Box at the end of a flight. I use 55mm wheels and fly from a rough old strip with wheel pants without problems.
The Xicoy CG machine and angle sensors sound nice however it is a little expense. Accuracy is supposed to be 1gram so it is interesting the it read 17 grams higher than the calibrated scale. I guess you had the model sitting level during the measurement.
It must be hard keeping track of 4 flight conditions. You could reduce it to 3 by using a VTR on the rudder so you get only a small travel around centre the maximum at full stick for stall turns.
It will be interesting to see your final incidence settings when you get a chance.
I have the same problem on my stabs as you. The right stab has 0.3 more incidence. I needed some right aileron trim so the left wing is now 1.1 degrees and the right 1.0 degrees with no aileron trim. The difference my be less than 0.1 degrees but that's as much accuracy as I can measure.
David