Just figured I'd make you aware of this site called
Wc3Campaigns.net. It's a big modding community for Warcraft 3, and even though it's not as active as it was in the golden days of Wc3, there are still members adding to the already enormous storage of useful resources.
I'm linking you here because I think (possibly after exporting the file format) you too could be able to make use of many of these resources; models in perticular. The polycount should be similar to your default, and I believe you support 3DS max no? The only thing you have to watch out for are the models that are not made from scratch, meaning, they're based off of a Blizzard model, thus owned by Blizzard.
You should have a look around and see if you for instance find
packs like this one, which in this case has every resource made from scratch, completely unrelated to Blizzard; all the author asks is credits for his work, other than that it's free in every sense of the word. Should you choose to make use of any resources from this website, make sure you always read thuroughly through the thread in which the resource is posted, and it would also be considered common courtesy to contact the author
before making use of his/her work.
Useful?..