Windows server 2012 SBS will not run RDS for more that 2 users ... Can I virtualize windows 2012 Foundation to be my RDS "Terminal Server"?

Hello All,

After setting up my 2012 SBS server and installing the RDS role & 5 user CAL's I find out that 2012 SBS (unlike earlier versions which frown on it but allowed it) will not allow RDS for more than 2 users (admin mode). Can I run 2012 Foundation virtualized on the 2012 SBS box or do I have to get another box for my RDS?

Thanks