but will there be a steady income from the machines?
I think 5$ an hour from every machine should do..
*ROFLMAOSC*
A more realistic goal on CPU mining would be to achieve $2-3 dollars A DAY per CPU, and that is only possible due to the major price runup Monero has had the last few days and you need either a VERY high-end many-core CPU or a very recent high-end multi-core CPU to have a chance at that.
Then you have to subtract the cost of the electric they use (14 core Xeons are quite power hungry as I recall).
For reference, even with the recent MAJOR profitability increases in most coins, my highest-income rigs with 3 x GTX1070 GPUs pull in very close to $1/hour.