You got it right.
3 x HS65MG
1 x 9650
1 x GY401 gyro
SWEEET choice in radio! Yeah AR6100 is fine. I would sell off any servos you get in the JR kit though.
You will need a nice lipo or 10 and a charger. I suggest the Lightning Power 2200 25C "anti-puff" lipos because they are which I fly exclusively. hmm Lightning Power should sponsor me.
Your best bet is a package deal from a great supplier like us! You should call HeliHobby if you choose to inquire on pricing.