You can now cross both stream crossings without getting wet. The first one, if you go downstream about 30 yards from the vehicle crossing, the stream braids into 3 channels. First two channels you can cross on nice stable logs. Then go upstream about 15 yards and you can find rocks to hop across. The 2nd crossing can be easily done with rocks.
Route up French is straightforward. I messed up the routefinding pretty good nearing PT 13,470 on the way to Casco so be careful here. If you get off a lot of the rock is extremely loose. After this route up Casco is well worn. For descent, I think it's better to go all the way to the saddle east of Casco then drop down, but dropping down into the basin at any point will work too.