Up to you but I like banking weight away, then you've got a baseline you can go up from. Always good knowing you've got more in the tank for next time than thinking you're stronger than you are and getting disappointed.
I also feel you're less likely to injure with something you can at least get half way up and then have spotter save you than something you can't get off your chest but give it everything / strain. That could be bullshit though.
Good luck, that'll be a solid attempt regardless!