Maximun Load For V-20???

Hey Thanks for all of the good or bad advice,,,, Tuna Im located in Half Moon Bay,,,

SO I have a 1981 v20 with an I/O merc 470
I have put 500 to 700 lbs of gear in the boat,.,,
salmon fishing rig,, hydraulics , gurdies etc,,,
oh and a 180 pound aluminum enclosure,.
not to mention heavy old auto pilot and ice ,,100 lbs of lead,,,etc...