I would probably keep the RSK- a stout lockback is your most versitile choice. However, the Necker fits the same kind of role, and it isn't much larger.

As for the Becker vs the SRK, how are they arranged? If I had to pick two, I'd go with the RSK and the Necker, leaving the SRK at home, OR just the SRK. Personal choice.

How much redundancy is there between the Leatherman and the SAK? The only reason I bother with a SAK any more is for the scissors, and I think a Micra or S-Squirt is a better choice. The scissors in the Micra are stronger than any SAK I've ever owned.

Lose the Mora. I know they have a cult following with certain people around here, but I've never seen one that was full tanged. I think any fixed blade that doesn't have a full tang is a liability when push comes to shove, simply due to mechanical strength. Particularly if is one of the ones with the hollow, hard ABS(?) plastic handle- it feels like a Lego block. I've had to much stuff crack on me to trust that particular handle.