you'll easily be in the 5500lbs. range loaded.
so, subtracting what's in the Tacoma from the the 6500 number might be getting you close to max.
but if you aren't in the mountains, then you'll probably be fine but it's good you have a great WDH with built-in sway control with your shorter wheelbase.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC