Mining difficulty on bytecoin.uk & easyhash.io with low hashrate

[vlad230]

I'm mining with with Xmrig CPU and I've noticed that the expected payout for the hash rate I have is always variable (e.g. between 5 - 10 coins/day).

Currently mining on bytecoin.uk (BCN) & easyhash.io (ETN) and I've read that you can also specify the difficulty somehow.
My hash rate is relatively low ~100 - 150 h/s/PC and I'm using 3 PCs.

Do you guys know how exactly I can specify it and what is my best option to get more coins ? I assume low difficulty but how much exactly would be best? (5000, 10000, 100000?)