Network Info:
HQ Site with 3 spokes.  Only media is leased line private T1 (PPP encap).  Every T1 @ the HQ site is set as internal and remote spoke is set as line.  
Question:  
I will be installing a T1 from 2 of the spokes to the 3rd spoke which will create the 3rd spoke as a Disaster Recovery site.  My question is, how should I approach clocking?  Is it bad practice to have more than one T1 with line or internal??
Thanks,
Adam