Specs for hosting a modded server?

[boringbread]

I'm thinking of getting a computer with a Xeon E5-1620 v2 CPU, 16gb of ddr3-1600 RAM, and a 500 gb HDD to run a modded minecraft server for 10-15 people.  I don't expect that more than 10 will ever be on at once.  The modpack is called Muck-Raft Feta and can be found here: http://api.technicpack.net/modpack/muck-raft-feta.  Will it be enough?  If not, what would you recommend?

[Lord Ptolemy]

Moved to Server Op Swap Shop