They don't seem to be quite full grown, 11" is listed as the minimum adult size for the females, but malis can go up to 14"-16" as adults. Generally, it takes them three years or so to get fully grown. Here are a couple of links from Deerfern Farms, the first on general uro care, the second some info on Malis.
http://www.deerfernfarms.com/Uromastyx_Care.htm
http://www.deerfernfarms.com/Uromastyx_Mali.htm
Karnivor's site has some good info on Uros too. Click on the first link under "The Uromastyx Pages" in the left frame:
http://www.karnivor.com/
Malis are probably the best choice for first time uro breeders, but they're still a bit tougher than a lot of other common pet lizards. Good luck.
[addsig]
