Don't be greedy when you choose bounty only based on basic calculation for existing participants and pool. Be reasonable, look at the site, whitepaper.

Is it good landing page?
Do you understant what is the product/service of this company?
Is this team have enough experience?
Is it real?

Because if it scam coin then it's just a numbers, it will not have any listing or will have cost much less than your calculated stakes.