Wireless Joint

so i need alil help im new here and new to 4g routers i wanted a mofi 4500 but there like a arm and leg what is a good cheap one thats like the mofi 4500 that has the 4 anttenas and one that u can band lock and one that will work with aT&t i have done all the other google lookups i also need one that the antennas come off of to add a 4g atennas to for the roof i can get 50 down and like 20 up just from my pourch on a note4 at&t phone and ping is nice and low ill be using a data only sim card any help on a router for my needs i would be so thankful

You will most likely find more people willing to give you recommendations if you clean up (edit) your post: separate your questions and use proper sentences.

Otherwise, It is difficult for people to translate or answer one continuous paragraph of words.