Now that you are at 4 ppm
I would leave the water alone. What is your tank temp at? Having it up to 80-82 could help as well. The ammonia that you purchased, did you shake the bottle to make sure no bubbles came up to verify it is pure ammonia?
What you will want to do is try and keep the ammonia at around the 4 ppm
until it goes down to 0 overnight. Then add a bit more and make sure it goes back down to zero, then your cycle is complete. With live rock and live sand may not take all that long to get it cycled.
It is hard to just sit and look at an empty tank but patients is the key here for success in the long run. BTW: Good job on not getting the damsels.