The maps are relatively open, setting it down won't be an issue and for most missions I only need the one. Main reason I want a large one is to stop the enemy blocking me by standing near the wood.
I am not exactly sure what they could do short of outright banning me from spawning Wyldwoods. So after a look at the book I realized that I can take the Acorn of Ages and get my second Wyldwood at my deployment area.
Frankly with restrictions on summoning or magic I fully expect to be up against some horrible death and daemon lists. So I am going for objectives.