Thanks, I'm glad the article was useful for you.
As far as the amount, I've only experimented with 3k - 10k pivx and what I found was that 3k pivx would get me a reward somewhere inside of three weeks. It gets gray between 4-6, but 7k seems to get rewarded anywhere from 1-2 weeks, and the higher you go after that towards 10k, it's a matter of days.
When you hit masternode, it's a payout each 1-1.5 days.
This is all dependent on the number of masternodes vs the number of staking wallets on the network at the time. More MN's means less frequency of reward for MN and increased frequency of reward for Staking.