Originally posted by GrnBrt
It shouldn't be a problem. A plane I built 20 years ago is still flying and no problem with the glue joints, just check them real good.
Now as far as the kits go, same thing as I have some from the early 60's and the wood is just as good now as it was back then. If they were kept in a controlled atmosphere they will stay good, now go and build and have a good time and don't worry. 
I agree with Art & Steve. Beware of the kits stored in the ATTIC, Storage shed or work shop heated with a wood stove. The wood is usually extremely dry and brittle.
good luck,
Bill