emonTX using AC power and load from pulse counting and CTs?

Bit of extra clarification here please; I was reading up on things and saw the text about using the emonTX on AC and not loading beyond 20mA. It mentions up to 4 temp sensors being OK. I am however using one optical pulse counter and 3 CTs - should I move to USB power for better accuracy, not knowing quite how much that will affect things given the pulse counter says is consumes 5.3mA during a pulse and none without - the CTs don’t use power do they?

This is from EmonTx V3 - OpenEnergyMonitor Wiki

My simulation shows that that should be OK.

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