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For RCs, you have plenty if you use Hive as a regular user. The RCs from 100 HP would normally be enough for a regular user. But to be safe, you could keep the RCs from 500 HP (which is about half your RCs). If you want to test things out, delegate 20b RCs (not HP!) to them. It's almost nothing, it won't affect you and it won't really help them... Just so you can get a feel on how much 20b means for you. Use PeakD if you want to delegate RCs, other interfaces may use a different denomination (like millions), and you might get things wrong.

I'll go ahead and send some over, my RC's are always at 100% anyway. I may only have 2500 HP but if can help onboard and retain new people well worth the investment!

That's my thinking too!