PH is sitting at 6
GH 0 to 30
I planned on getting a proper water test before hand.
The tank is a few month however I changed the filter media completely as it wasn't doing well enough. My angel is full grown
The other fish I was thinking of if not the Gourami was apistogramma
If you changed the filter media, then don't add any fish for a few months because the filter will need to cycle again. You should also reduce feeding for the next month and do a 75% water change every couple of days to make sure the ammonia and nitrite levels stay low while the filter recovers.
Apistogramma cacatuoides or one of the other larger species of Apistogramma would probably be ok, but not until the filter has recovered.