Sounds like you have a good chance of passing and have taken steps to insure that you do. However you left out some needed details: height, weight, hair length, hair type, metabolism, etc. FBR and Jerry G have many postings here and on the other side that address hair testing. Do an advanced search in the Drug Test forum using their name and the search term 'hair'.

I am by no means an expert, but have done a lot of reading on this topic as I am coming up on a pre-employment hair test soon. Good luck.