I wish to make some 3D models for the various building and environmental assets I would need to make a Octopath Traveller type 2.5D game. How do i proceed because the camera system I'm using is rotated and viewing top down at an angle of 15 degrees. The models just appear to point towards towards the camera but my sprite is aligned to the camera. Please help a new learning developer out!

The game engine I'm using is Unity but the sole reason is that my laptop right now can't handle Unreal engine 4. But if using Unreal engine is better for this type of game, I'm open to change. Can anyone give some opinion in this matter?