1. What type of output does the H9 produce? Line Level or Instrument Level
It will essentially give you much the same level out as you put in. Note that it does not enjoy a very hot line level.
2. Balanced or Unbalanced
3.If I am connecting the 1/4 outputs to an audio interface to bring them to the daw, should I use balanced 1/4" to male XLR cables for best quality, my audio interface accepts both 1/4 and XLR.
It really depends on the audio interface. Ideally try both and see what works.