Making a new delta foam wing

Have one last sheet of 9mm EPP foam and decided to make a new delta wing. I want all the electronics enclosed in the fuselage as my other wings fly nice but have exposed wires and stuff.

The fiberglass pole section runs length of the fuselage underneath for protection. Has two lateral carbon fiber spars. Wings are flexible in the lateral direction but not unnecessarily so.

2212/1400kv motor with 8.6 prop, prop saver, 20amp esc, 3s 800 mah lipo. 9 gram SG92R servos.

The drawing on top was for another design that I decided to forego.

Wing area 451 inches and 15oz weight. WCL = 2.7.

Laminated the balsa elevons and the tail. Taped the leading edges.

Lots of room in the fuselage to move the battery to and fro.
The tail just slides into the fuselage so easily removable for transport on my ebike.

Update 6/25: had maiden. Flies, but lots of problems. Elevons are too small to give good authority. So goodbye to my nice balsa elevons. Prop is terribly out of balance. Glides nicely and is stall proof but under power is doing weird stuff.
Elevon size was 1/10 of wing so will increase size to 1/8 or more.