Creation of a game ready aircraft model

Hello,

I am working on a unity game set in the mid 50s. I have an aircraft sketched out and I need it converted into a model that can be dropped into Unity. The model needs to be fully textured and have a relatively detailed cockpit. The difficulty is I am a student and i don't have a massive budget.

the model needs:
-Detailed cockpit
-Separate control surfaces with local rotation points
-full textures

Thanks for your time!