My Cobra OL set goes down to a SW, because I found a used OL SW in the used bin for $25. I was lucky. The Cobra F7 OL does not have the "One" identifier on the GW or SW like the other irons do, only the colors are different from the standard F7 line. So when this store got a 37.25" wedge in, I don't think they realized it was OL so they priced it cheap.
Normally, I would add a 60 to the bag, and I only have a standard length 60. However, I am finding the SL SW better with chipping than my standard 60, so I am not sure if the standard 60 will get back in. Having very good luck choking down on the SL SW for shorter shots.
I may be looking for a SL LW soon. Cobra has SL wedge options, but they are pricey.