Yes, I wouldn't worry about the delay, once your flight is cancelled then you have a lot more options than now, and I actually think it will be done well before March, since that's when the timetable is operational, not as it shows on the sales system. Patience is a virtue in this game, if not always in this forum.

Consequential losses are always at risk in this scenario, so it's best to book accordingly (in terms of things like semi-flex bookings) and/or insurance.

This is essentially an equipment rotation and I'm guessing CW is now Club Suites, so the gap between that and First is somewhat narrower. Different people have different appraches to this, but personally that would be OK for me as an alternative to First. I certainly would be reluctant to trade that off against a schlep around DFW to give one example of many. As yes, it could easily be changed again, I think we've seen some SFO cancellations where people got rebooked via LAX, the SFO direct First was then reinstated after a further equipment change, and those passengers could not move back. So again with your flights such a huge distance off I would do less rather than more.