WANTED: Ultegra 11-30 10s cassette

My road bike currently has a 53/39 crank and 11-25 cassette, and I've come to terms with the fact that I need some lower climbing gears :) Ideally looking for a 10s 11-30 cassette, open to 11-28 as well. Potentially open also to a 52-38 double chainring. Sadly my crankset (Ultegra 6700) has 130bcd, which can't accommodate compact chainrings...eventually I'd like to upgrade the crankset (ideally to something 160mm or 165mm) but probably going to wait a bit on that.

Happy to pay shipping, or pick up in the CA high desert area.

I'm also in the process of putting together a bikepacking rig and am looking for bags/bottle cages/etc. Particularly looking for a handlebar bag that will fit on Nitto Forest Ambler bars (essentially a narrower version of Crust Jungle Runner bars); a small seatpost bag (due to low seat/tire clearance); a top tube bag; and water bottle cages. Open to other frame storage components, too.

Thanks!