HobbyKing is reliable and well known enough in the R/C community so there should be no problems ordering from them... if you're willing to patiently wait months for stuff to arrive from their Int'l warehouses...
Order from their US warehouse if you do get it from them. I've still got batteries, chargers, and misc parts somewhere in the middle of the Pacific ocean, slowly floating their way over since the start of June.
Though I did order batteries... so you might be alright with just the charger.
Can't help you w/ the connectors, but there's probably an adapter for what you need somewhere on HobbyKing though.
Just your friendly neighborhood narcissist gearwhore.