R/C Tech Forums - Power supply w/ dual charger question.

Hi there got a couple questions concerning my power supply and charger setup.
I currently use this power supply and this charger.

I recently ordered more batteries and figured I pickup the same charger again in hopes of connecting both to the same power supply. It's my understanding that I am supposed to have some breather room for the power supply so I figured I'd be fine considering I would only need 160w which leaves 60w according to the 220w max on the power supply. The one thing I forgot to take into account was the fact that the power supply was designed for 240v input and not 120v. When I ordered it a while ago I changed the plug myself and everything was fine only using one charger, even charging at the charger's max 7a.

What I need help with now is knowing if my power supply will be able to handle both chargers, or if there is some precautions I should take into consideration. Also maybe it's in my best interest to purchase a better power supply I think correct? Rather play it safe then not.