visit the wasserflug site.........and the Seabee OC sites the LMA will help with the structure though a at this size and with this design I would think that blue foam is going to be a favoured item scaled from a 3 view.
as for Uncle Willie I don't know myself but I have had dealings with those who have and they haven't had problems there is another seller he has had feuds with ..........but I have a list from another reliable seller in the USA but its always a case of Caveat Emptor...check out the USA links in the Free plans and links pages I set up but I haven't updated them all yet to go straight to more updated version then you will have to go and look on RC.groups
http://www.rcgroups.com/forums/showthread.php?t=448080