I do pretty much the same thing except instead of anti seize I touch a dab of 2 cycle oil on the joints and pins with a q-tip. Then I lightly wipe the bottom of the sprue plate with the same q-tip. I prevents lead smear when cutting the sprues. I re do it before every casting session.

Also, instead of smoking with a lighter, I flux with sawdust and set the molds on top of the pot with the sprue plate open while it's smoking/burning. After a few sessions I don't even bother with this step though.