615 Watt Off Grid System

Any opinions on these panels, with charge controller?

Cheaper alternative to the Xantrex TR1524 1.5KW 24Vdc Inverter/Charger?

I would need something to mount the panels on too. I have a 10x16 lofted yard barn that I am using for "The Powerhouse." The panels will be mounted on the lower part of the gambrel roof.