I think I will keep the 3rds in bar 13 otherwise there will be a sudden change to the sounding between bar 12 and 13, but the speed in the beginning is actually free, so pianist can do the accelerando in the way that is comfortable to them.
I don't know how to use Finale to spread 2 lines to 3 lines then back to 2 lines, so about the use of cross staff voicing, I am sorry about that but I can't fix it.
You are right about bar 129 and 130.