I went for option 1. I don't like the clutter of the extra saves of option 2 (which is weaker than the other 2 options btw, it'd have to be a 5+ save to get parity) and I would rather the slight bump to DE weaponry that option 1 gives over the nerfing of 'bullseye' lances that option 3 gives.
Mind you, I would be quite content to just drop the lance portion of the refit and leave it as simply a RCS for WBs.