Lots of good points already made, Motion: at least one size up from maker's recommendation, carry different styles for different holding ground, ground tackle is a system, etc...
Quick read, I didn't see comment about lifting the
anchor by hand if necessary. If your
windlass craps out, you'll want to recover
anchor and
rode manually -- or mark it off with a float for retrieval later. If a manual
lift is your preference... extra-extra weight might become a disadvantage... so maybe there's a sweet spot for weight selection.
-Chris