The 550 *should* be fine - you've chosen two EVGA power supplies, which is a good choice - never cheap out on a power supply.
PCPartPicker is saying it will only use ~370W, and the 550W should be fine for that.
If, in the future, you'll want to upgrade to components that use more power, then perhaps the 650W might be the better choice. But, for the moment, the 550W should do.
The 550 *should* be fine - you've chosen two EVGA power supplies, which is a good choice - never cheap out on a power supply.
PCPartPicker is saying it will only use ~370W, and the 550W should be fine for that.
If, in the future, you'll want to upgrade to components that use more power, then perhaps the 650W might be the better choice. But, for the moment, the 550W should do.