Hi! I would go the route of box modeling or splines using a reference inside of , where you construct on top of an image. Then mirror, attach vertices and smooth for the end result.
Here’s the approach of making a building using the above ideas. Just adapt these techniques to what you are trying to achieve.
://cgi.tutsplus/tutorials/modeling-from-photographic-reference-in-3dsmax–cg-5327
And splines in
v=ZSJvbsOKt4g