No heavy reading required -
for that 1.4 - a good flyer will be 9-10 lbs with a wing loading of 18 oz ft.
been there -
this is a good engine but don't expect same power as a alky/nitro burning setup .
so stay light.
If al yo want to do is hovers and "3D- just stick with a model much like the rash of thick winged hover stuff on the market- -If you try for an EXTRA in that size (1300 squares" - you will very likely be overweight .