Business Degree Help

[letsgo123]

Your Location: NC
Your Age: 30s
What kind of degree do you want?: Business degree. My background is in Project Management, 10 years of experience. I will be getting my PMP by December. 
Current Regional Accredited Credits: None. Will start with Sophia courses. 
Budget:  $6-7k. My company can reimburse up to 5250 a year. I was hoping to not spend more than an additional $2k over that if possible. 

Commitments: I have a full time job and a family to take care of. Most of my studying will be nights/weekends. 
Dedicated time to study: 10-15 hrs a week. 
Timeline: Looking to complete my degree within 12-18 months if possible. 

I have looked through several posts and see that UMPI may be the fastest way possible if I obtain my max credits from Sophia. I saw the wiki on the degree path and it does interest me the most. Is this school considered regionally accredited? I can only receive reimbursement if it is. 
Otherwise, they have some partner schools with tuition discounts/deferrals. I've posted them below. 

Arizona State University 
Cambridge Global New England Institute of Business
Capella
Colorado State Global
Dallas Baptist
Drexel
Florida Institute of IT 
Grand Canyon University 
Lindenwood
Nova 
Rasmussen U 
Southern New Hampshire University  
University of Hartford 
Walden

Does anyone have any experience with the above schools? I'm looking for fast and cheap if possible. Ideally, a program that accepts at least 75-90 credits from Sophia/study.