Thanks guys for your votes, it was helpful to make some decisions.
@Dairy
Dude, I've already answered this question earlier. I make most of textures by myself, some are inside blender, some are being made with an use of cgtextures. Go and watch some tutorials if you want learn 3D and for future questions about 3D use HC messenger feature
@Haregar
Apparently for upgrade version II is the most voted so I will stay with it. As for non-upgraded unit I have not decided yet.
@blob2
Thanks dude for your opinion. You have some good ideas, but I think that while Lamassu is quite known fantasy creature, I didn't know about Pazuzu myself. Unfortunately we have to introduce units which are widely known, it is no good when someone is wondering what is behind one or another creature.