First on the pH...as
@Essjay mentioned in an earlier post, make sure your pH test is accurate by out-gassing the CO2. Second point, use the high range test as well as the normal range to see the results; they will be different, but the issue is that when the pH is measuring 7.6 on the normal range, it might actually be higher, and the high range will tell you/us. Once the accurate pH is known, that will be the pH to use in deciding fish, though GH is actually more important--if memory serves me, you have softish water?
On the ammonia, using a conditioner that detoxifies ammonia at water changes is advisable. This detoxifying is only temporary, for about 24-36 hours, after which the ammonium [this is how most of them work, changing ammonia into less harmful ammonium] reverts back to ammonia if it is still present and if the pH is basic (above 7.0). The teemporary detoxification allows the ammonia/ammonium to be taken up by the bacteria or live plants, so it should be gone within the 24 hours. Especially with fast growing live plants, like floating plants-- you will never have ammonia issues.
If the ammonia is actually due to chloramine, i would not even bother with special conditioners, just use a good one that deals with chloramine. I am again assuming you have live plants (I believe this was mentioned elsewhere) and they will deal with this.