Well the car's going to be fairly light, I don't know how light - but it's got tubular everything, zero interior, zero harness, skinnies, aluminum everything (except the cage)...
As for a trailer, I don't own one (yet), but when I do buy when, I'd like to get an aluminum dove tail...
Having said that - I've pulled Frankie w/my lil 6-banger Silverado since day one (and towed many other things: several landscaping rigs, a roofing rig [this one was cutting it close], etc) and never had any problems. Obviously, the truck isn't "ideal" to pull - but it gets the job done.
Just seems to me like that Edge pulling a nearly empty Fox Coupe would be fine