Truthfully I wouldn't drop down to 1800 yet, simply because once you hit a plateau you will find it harder to break since your intake is already so low and your exercise levels are so high
You are probably going to drop weight like a madman until you get down to 170 or so, then are going to hit a small plateau. Once you break that, you will probably hit another plateau at around 160 and with your calories already at such a low level, you won't really want to drop much lower and might find it hard to drop below 13-14% BF
I guess you never posted your goals though, so maybe that would be good enough for you. But if you have dreams of hitting 10% BF, I would bump up your calories to at least 2000 and drop lower later once you plateau
Otherwise, good job kicking into gear so quickly. It is a sad day when you finally look in the mirror and realize you have been lying to yourself for a while and are