I third! Starting again after knowing the material already is probably the safest bet I reckon given the timescale! better to blast through it then spend hours scratching my head and running out of time! All about the workflow.......
Check out that software and let me know how it go, if it can do what it says it does it'll be fantastic. Theres some nice comments from users in big studios as well - they swear by it.
Either way like C said(if i can call you that

! ) its all about keeping the clock rolling!!