What dose and fractionation would you use for isolated intradural extramedullary drop metastases to the cervical and thoracic cord from solitary fibrous tumor/hemangiopericytoma?   

A patient had craniotomy and resection for solitary fibrous tumor 10 year ago with adjuvant RT. Now presenting with 3 areas of drop metastases, one resected from the cervical cord region and another two, located around T2 and T7. 

Assuming further surgery is not an option, how would you approach radiation in an otherwise healthy patient with good performance status and no other areas of disease. What total dose and fractionation is appropriate?  Would you treat only gross disease with margin or use a larger CTV? Is there a role for covering the entire craniospinal axis?