Nice move, I missed the dip, now it's risky for me (and I also have most of my position in ALTs (which now are on the upwards), but I would suggest you buy in steps, I don't think it will stay low for that long, it will be re-bought in the next day or two by miners, as cost of production is higher than actually buying it from the market (at least if it touches 1800$). I also don't have that much time to actually execute trades, so I'm just leaving them in HODL mode :)
RE: BTC about to freak you out one last time this year!