Chodo,
If by 5 in 1 you mean that you have the test/dip strips, I strongly recommend that immediately change to the liquid test kits (i.e. the ones contained in bottles). Reason being test/dip strips are the least accurate for testing water quality and they don't always test for ammonia.
Aside from that, the recommended levels are as follows:
Ammonia- 0ppm
Nitirte- 0ppm
Nitrate- 0-40ppm
GH- 125/3-196.9ppm
As for KH, well I wouldn't be too concerned about that.
Jay.