Hey , first of all welcome to community.
I can understand the hectic while rendering in Autodesk Maya and other 3D software.
Question 1: UE4 does not include modelling capabilities. Is this correct?
UE4 has put out a beta feature in 4.24 for mesh editing and poly editing. It’s not as advance as maya modelling but it wil do your basic work. You just have to enable them from plugin settings.
Question 2: If I export files from maya, can I render them in UE4, and if so is this an advisable solution?
This is 100% advisable solution without any doubts. I have been rendering my movies in unreal engine for last 4 years without any issues. It will be a great upgrade in your pipeline. You can look into the official documentation here
Hope this solve your doubts.