I've been staking 1x - 2x daily, I started off with an initial 40 coins, also never trust the estimated stake timer in coin wallets as they are always incorrect, just like the Green staking icon bugs out sometimes and doesn't light up but it still shows you have mature coins waiting to stake with a weight against the network weight if you hover your mouse over it.
Yeah, i always check on the console for network weight and estimated time to stake, But i manage to hit a stake yesterday with a good reasonable amount, almost double on what i currently have and right now i am running my wallet once again to see how my current inputs of 5 RHOM each will plays out
I have mined a decent amount myself but when it stakes oooh eeeeee it rewards great.