Apparently, the ideal is to dry at 15C and 60% humidity ... but you are pretty darn close to that which should be good. Make sure your drying area is completely dark and has some gentle air movement AROUND the flowers, not directly aimed at them. In an ideal world, you would want to dry them for 7-10 days but this is hardly an ideal world so as close as you can get to this, the better. My first grow (I'll never forget) dried in 3 days... was still a great smoke after curing.
Good luck!