I think I found this too late to be of assistance.
But, I'm very interested to hear what you came up with yourself.
I've a group of players who, more often than not, do something completely unexpected. Typically it means I have to improvise on traps, puzzles, and encounter strength all at the last moment without leading on that they either spoiled the original plan, or I realized they would die outright because they destroyed or disregarded something important.
Anyway, let's hear what you came up with, and I'm certain the bunch of us here could provide suggestions on how to modify upon your start.
Happy DM'ing!