Hi mate,
Goma and Ziggy have covered everything, when my tank was cycling I was checking the water Params every two days, I think you should check Params about the same or every three days and post them on here and the guys can tell you where you are at with you cycle.
Also the graph Goma has posted on the previous page will give you an indicator on how your tank will cycle, the first 16 days is your ammonia will spike which should come to 0 before your see your nitrite spike then after another couple of weeks this should come down to 0 then your nitrate will spike and you should be ready for a water change then you should be ready to introduce your clean up crew. It's a slow process but a necessary one.
Also I'd let your hydrometer sit on a bench and only use the refractometer. Hydrometers aren't good compared to the refractometer.
Regarding Ph, there is a PH RAISE on the market for SW, I have never had to use it, the sand bottom and salt you use generally keep this good, what salt are you using? It's not critically low at the moment but monitor it and if it doesn't raise in time you will need to raise it yourself before putting live stock in.
Good luck Mate