Most of the kits sell the Ammonia kit seperately

I have a test kit by Fresh Labs that contains: ph (high and low range), Nitrite and Ammonia. I had to buy Nitrate seperate though.
In the end, you will probably need to buy 2 seperate kits to get the ph, nitrite and ammonia all together unless you get lucky and find a kit with them all like I did. It can be spendy, but they are important tests

I would personally go for the liquid tests with vials rather than the little paper dips. All of the dip tests I've seen only do 25 tests (and cost $10 each here), but you could get one of the tests with the vials and liquids to mix for $5-10 (for a single one, like PH) that will do 50-100 tests

GOod luck!