I would have that equalizer changed to a 1,000-1,200 lbs for sure ..... That is not going to cut it, in my humble opinion.
The trailer will leave the factory at about 5,700 Lbs, and if you put around 1,300 lbs of stuff in it, you will have lets say a trailer weight of 7,000 Lbs ... A typical %15 tongue weight will be around 1050 Lbs ... at %10 minimum, 700 Lbs.
I am sure others will chime in if I am wrong..... I am sorry I am bringing this up but better be prepared and get the stuff you need to safely tow the trailer ... That IS a big trailer you have, best to play it safe ...
2009 Ford F-150 XLT/XTR 5.4l, CrewCab. long bed
2011 Surveyor SV-291