Its a shame to see it damaged, but i cant see any issues with the air frame prior to lift off....
You have a huge amount of wing area and a positive incidence, and plenty of power, that thing was ready to lift well before it did. I personally don't understand and never have bothered with high speed running down the runway, ive seen so many aircraft broken and destroyed because of it!
No doubt you will fix and and try again, its a fantastic project.