IMHO, you're carrying twice as much as you need to. Seeing what you have, I would keep the Mini-RSK and Leatherman tool and then choose which fixed blade I liked the best. I would go with the SRK

Why? The Mini-RSK is your best and safest folder and should be EDC. The Leatherman should do most or maybe more of what the SAK would do. The SAK is also unsafe to use as a knife, as it usually has no locking blade. I would choose the SRK (6" blade) since you already have the Mini-RSK with a 2.88" blade (the BN is 3.25"). BUT, its JUST my opinion.