I'd do some balancing. The stats:

Rudder - 12gr.
Stab. - 15gr.
Elevator - 14gr.
Motor mount + carbon* - 110gr.
Fuse - 64gr.
Wing - 178gr.

Total weight: 393 gram (13.9 oz) w/o ailerons.

Magnum 52XL - 392gr.
Muffler - 110gr.
4x S3001/S3003 - 150gr.

Total: 1045 gram. (36,9 oz)

The weight/performance ratio is getting very interesting! My all in weight should be around 1500-1800 grams (53-64oz) I suppose. And that with something about 3kg (105 oz-f) thrust from a 12.25x3.75w prop. Awesome! 8) Power to weight ratio of almost 2:1...

*The carbon is getting shortened, providing a weight reducing of an extra 10 to 20 grams.