I wrote a complete tutorial on how to install Resilio on Raspberry 3, mounting an external USB Drive as well as some of the issues I had. I hope it is of use.
http://jaimejim.github.io/raspberri-resilio/
Currently I am thinking of under-clocking it, as I am still having some problems with the overheat while syncing:
pi@raspberrypi:~ $ vcgencmd measure_temp
temp=73.1'C