I would like to suggest another good candidate beginners model (particularly if you are considering slope soaring)

The Schweitzer 1-26 HLG
http://www.skykingrcproducts.com/rcp..._1-26_HLG.html

EPP foam such as is used in the DAW 1-26 is much tougher and more impact resistant than the EPO foam used in the 79in Yuki Model LS8-18 PNP (EPO Foam) model you mention and is better for a beginning pilot..
If you construct the DAW 1-26 to use ailerons and build the wing to have simple dihedral (not polyhedral) and use a dihedral angle of about 2 degrees - you will have a fine rugged beginners glider that can be flown under nearly all conditions of lift.

Note: This glider is not motorized, but flies exceptionally well on slope lift or after being bungee launched

Notes on bungee High-Start launching if you are unfamiliar - http://home.iprimus.com.au/ianpullar...Hi-Starts).htm