You will never get close to safely towing your rated 9,500#. The biggest challenge you face is the serious lack of payload. First of all ignore ALL dry weights, they are a joke and the joke will be on you. Take the tailer's GVWR and figure 13% of that number for a real world tongue weight (+ another 100# for the WDH).
If you have a trailer with a GVWR of just 6,000# you will have roughly 900# of TW (including the WDH). Take that off of your payload and you are left with a measly 400# for everything that goes into the truck: bodies, dogs, tools, firewood, toys etc. The trailers you mentioned are half again more than that and you will be dangerously overloaded.
If you just have to have that much trailer you will need a lot more truck (with a lot more payload).
As always.... Opinions and YMMV.
:C