You should contact the following two adminstrators of the Weeks group at FamilyTree.com.They may be able to assist you monetarily with the DNA test.
Brinson Weeksbweeks@bwenterprises.us Tom Weekstweeks@epix.net
I am familiar with Ashburton Parish since the Prideaux family lived there in the 1600's and they also intermarried with the Wyke/Weekes family.
We do have DNA and a proven paper trail for a George Weekes who was probably born in Woodbury which is NE of Ashburton and also in Devon, so your DNA would offer a more recent look into the past.
Some words of advice.Be suspect of any site such as LDS, Geni or any other that doesn't back up their info with vital records, deeds, wills, censuses or court records.Much of the info out there on the net is recyled and contains a lot of descrepancies.Look for documentation...