you need to provide more info on your Expy, other than just the year.
factory tow package or not, rear end ratio, which package(XL, XLT, Limited, King Ranch, EL)?
your biggest problem is the Wildcat's "dry" hitch weight of 900lbs.
loaded, it'll likely be over the max of the Expy's tongue capacity or its max payload.
SUV's, like the Expy, have very poor payload capacities, for the amount of towing capacity they have.
bottom line, that trailer's for a 3/4 ton rig, at over 35' and a loaded hitch weight of close to 1200lbs.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC