Hi Peter,
Take a peek at
www.ziroliplans.com. Nick Ziroli has a 91" span Zero that may be just what you're looking for. It is 73" in length, weighs 26.3 lbs. and takes a 3.0 - 4.2 engine. I don't know about the Zero but there are fiberglass fuselages available for many of his designs. And you won't have any trouble getting accessories for this plane.
While you're at it, check out
www.precisioncutkits.com. Larry Katona operates an excellent kit cutting service and has a Ziroli Zero listed in his ready-to-ship section.
Good luck and happy flying.
Al