As someone said, welcome to the rabbit hole…there are so many options it can be a little bit overwhelming. I would suggest starting with some handhelds (let us know what you have coming) and maybe buy a mag base antenna. This would let you see what your “farz” might be and then build on that.
There are many great options for mobile units (that can also be used as a base unit). I would walk into it and figure out what would work best for your situation.
Good luck and believe me when I say that there are lots of good people ready and willing to help.