Welcome and good luck with the restore! I have done exactly the same with my Williams 1 - taken 3 1/2 years and many £££££££££'s but car is now pretty much spot on! The car is features in this month's "Performance French Cars" magazine if you want to check it out - otherwise look through the pictures thread for Williams 1 number 0425.
If you need any help or advice, I am sure we will all be able to offer help and support! :D