I'm not planning to do any texturing. Not aiming to be a texture artist. The engine doesn't support loading vertex data. Its just loading an OBJ file. The engine really isnt intended to have an entire scene in a single mapmodel. It has a native geometry for that, but its the only (free) engine I could find that could…
You say you're not aiming to be a texture artist, what is your goal? Environment artist? if so you will need to do texturing and a lot of it. So this is one model? not broken up into modular pieces, why? And out of curiosity how many triangles are we talking about here? If your engine can't handle a real time directional…