Will soon be doing some changes with my truck soon looking for opinions on whether I should go with a 4" or 5" exhaust?

If I go with 4" is there any advantage to turbo back compared to a delete pipe since truck has 4" exhaust from factory?

Plan on running Rays tunes I don't want a drone inside truck and also don't want it annoyingly loud.

Not opposed to running a muffler if you would recommend.

Also any brands you guys would recommend since FLO~PRO is out of the game now, please let me know!