I am not sure I would do that. You can only take the trukk as a dedicated transport and burna boyz can't get it. So, you will be disembarking something to that is small in unit size to make its way across the board.Would it be viable to take 3 12-strong units of Burna Boyz in trukks?
I like burna boyz as a concept, but not so much in practicality. However, if I were going to use them, I think I would get a battlewagon for them, take one group, and move them with other battlewagons or trukks. The idea of them as power weapon wielding boyz is neat, but three groups seems to be a bit much.