Honestly your team isn't as bad as you say it is. Running back is terrible but otherwise you are ok. And Bjge might be a serviceable 2nd RB in non ppr considering his goal line prowess. Helu isn't even starting right now so I wouldn't be comfortable playing him.
Kendall Wright on the ww? Pick him up ASAP. Locker looks like hes going to be the starter and loves throwing to Wright.
The Brown for Davis trade is one I would normally do ASAP, but considering your bad running backs and strength at wr, I would try to flip Davis and maybe someone else for a solid RB. Buy low on a Richardson maybe? Doubt that works but would be ideal. I would even trade him for Hillis in non ppr in a heartbeat. Goal line beast and we both know the chiefs are gonna pound the rock. If you can't find a RB you are comfortable starting then do the trade. Brown is poised to have a huge year. Maybe later in the year you can flip one of your receivers for a RB. And tight end is pretty mediocre after the top 2 so you can get a serviceable option on the ww to replace Davis in case Gronk ever goes down. Rudolph, Cook, Olsen?
I would also look into picking up backup running backs of often injured players. Goodson on the ww? Pick him up. David Wilson? Same. You mentioned Kendall Hunter. Same idea. Obviously can't pick them all up but get the ones you prefer. You would be an injury away from a good starting RB.
Drop Dexter too. He's gonna be a non factor esp. in non ppr. I would def keep Baldwin though. And Taiwan Jones? Ehh not expecting much especially in non ppr. Would much rather have Rodgers or any of the above backs I mentioned. I also wouldn't carry 3 tight ends. If you are able to trade Davis then just carry gronk if your league allows that.
Wow lol that was long. Just my suggestions take them fwiw.