As time goes by, I'm still in this stuff and recently made some changes, actually today.
IFLT works pretty well and throws out something from 1...5% a day in new coins. That's considered very good.
My second experiment with Bitbeans only throw 5x 1000 coins so far, not that good.
The third, Tek, did not gave me any return yet as the coins are still less than 30 days in the wallet.
So, the news, I split both IFLT and BITB in several wallets, they run on 2 laptops, that is 4x IFLT and 2x BITB. I don't know it it will make any difference, but fact is after staking the coins will hibernate until they are mature again. Distributing them may make it more even.
You can run more than one wallet on a single machine, just use a different datadir option and another wallet.dat.
More if I know more :)