Jerry:
Judging by the price and some of the details, the Beaver appears to be the same series as the Chipmunk. I suspect it is a one piece wing and has the same light construction as the Chipmunk, not the same as the more expensive RV and MXS. That would explain the low weight. It would be worth a call to Aztech to find out about the wing at least.
Go for the RV 8... and put your 26 in that.
Jim