You can get a get of a 22% Air Tractor 401-B or 402-B kit from AMR. These have a 123" span. I have built several AMR kits and the quality of the kits are top notch. I am a ways away from you but a deal could be reched to build one of these if it fits your needs.
Here is a link to their site [link=http://www.amr-rc.com/index.php?path=content&SC=kits&SUBSC=kits to be assembled&page=kits_info&produit_id=335&marque=AMR &langue=en]AMR Air Tractor[/link]
Anthony