Mr Cox's cubic loading value of 12.6 pretty much matches what I think the 2D regular wing loading is saying. At 780 sq inches and 10 lbs it will fly quite well but it ain't gonna be a floater slow flyer sort of model. Being a delta it may offer some funky high angle lift effects that'll let you slow it down a lot for landing by forming a strong vortex lift over the wing with a high angle of attack and lots of lift for a slow approach. Play with the high angle flight mode the proverbial 3.5 mistakes high at first until you get a handle on how it handles in that mode.

As for the thrust to weight I foresee F18 on afterburner like performance from that engine on a 10 lb model.