Hobby barn has a Marutaka kit, 56" ws, $169 (I hear its a builders kit). There are also plans at the RCM plans store, pl-620, 64" ws, $23. The RCM plane has foam core wings but you could easily make a build up wing since its constant cord. No arf that I know of. Then there is the Ziroli plans which are currently still in development. Dont know when it'll be done. Will be big.
Edwin