Though not a big issue with mere 6A, but it's better to keep the panel wire as short as possible. The fridge vent route is usually shorter than around the back.
The very 1st install on the List illustrates this fridge vent route - you may skip the junction box on the side of the vent, expensive, not fitting well under the cap and unnecessary in case of a single panel. Buy a long MC4 cable AWG10, about 100ft(?), cut it in half, MC4 ends to the panel and bare ends to controller. MC4 cable included with the kit from Solarblvd is too short, brackets are useless and controller is an unknown off-brand. For that price you can get same 100W panel from the same store, a decent controller and enough MC4 wire. The wire you can get at
http://www.unlimited-solar.com/10-awg-mc4-cable/?sort=priceasc.
