Welcome to the Forum...
I'm sure lots of experienced folks here will 'weigh' in on this one.
My quick take/opinion is that you are asking an awful lot from your Toyota with a 35 footer and probably around 10K loaded for a trip.
Tongue weight is going to be very high and that, along with your family and gear in the truck is going to be a problem for the PAYLOAD capability of your truck.
Hopefully others will give you a more positive outlook.
"If we couldn't laugh we would all go insane."
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