The bend in your mast is slight enough and you have enough lever-arm distance that the above-mentioned technique might be the quickest and easiest way to go. If not, I straightened a badly bent mast from my Hunter 170 in a two-step process:
1 - Set the mast against my home's foundation slab, (padded with 2x6 lumber), set a six-ton jack (also padded with lumber) against a steel fence post set in a concrete footing, and got the biggest part of the bend out. Fence post was displaced some, but pounding the ground with a sledge hammer got it back into place.
2 - Fine-tuned the adjustment by placing the mast across my driveway, again padded with 2x6 lumber. A long bolt was inserted in the end of the mast to prevent twisting. A long 2x6 ramp was placed on top of the bend, and my van was driven up onto the ramp. Plywood spacers were placed underneath the bend to limit the amount of deflection. The front left tire of my van made many trips up and down the ramp, each one with successively less plywood spacers underneath, until the mast was straightened to my satisfaction.