I have never used the EVO on a CZ, but did use several on 10/22 platform builds. The Rutland birch ply used by Boyds is very dense and this quite heavy, but the EVO is the lightest of their stock designs and I would hazard a guess that the weight is pretty close to equal that of the factory walnut stock. Boyds standard LOP is 13.5", but you can order any LOP that you want.
Being new to custom shooting sports, is there a method to determine your LOP