Finished now (still unblocked and unphotographed, though)!
I knit the extended lace section until row 46, purling 2 tog at the edges of the last row to get correct stitch count for the edging. I somehow messed up the first edge row (damn you, moving stitch markers!), and had to frog and restart.
I used frosted white 6/0 beads for the edging. The edge was slow to work, luckily I was on vacation so I had some extra time. The picot bind-off took me several hours and my hands were stiff afterwards. Finished with plenty of yarn left, but I don’t regret stopping at row 46 - I wouldn’t have wanted more stitches to bind off :)