may I use a mini 5700 XT (or full size), with a 13" macbook pro 2018?

may I use a mini AMD 5700 XT (or full size), with a 13" macbook pro 2018?

Also witch e-gpu box should I use?

Do I NEED an extra display?

does the egpu support hot-pluging?

Also IF I download windows on the computer, will I be able to switch to mac with a click of a button?

(I don't care about speed of switching)

Also speaking of windows software, will I be able to use an nvidia gpu if I have windows on my mac?