Online bachelor CS degree to prepare for a master CS program

[npvn]

Hi everyone,

I'm looking for an online CS bachelor program with the ultimate goal of doing an MSCS. My current goal is Gatech's OMSCS though I might consider an MSCS at a brick-and-mortar university in Melbourne where I'm based.

About myself: I don’t have any tertiary degree but have more than 5 years of experience working as a software engineer. I also completed a number of courses at RMIT University that is equivalent to one year of a traditional 3-year Australian bachelor program:

Code:

[ID]     [Course Name]                     [Grade]
COSC2429 Introduction to Programming       (3.64)
COSC2081 Programming 1                     (3.28)
ISYS2089 Software Engineering Fundamentals (3.56)
MATH2081 Mathematics for Computing         (2.52)  
ISYS2077 Database Concepts                 (3.12)
ISYS2422 Business Database Fundamentals    (3.12)
ECON1193 Business Statistics 1             (2.96)
ISYS2109 Business Computing 1              (3.32)

I decided not to come back to RMIT to finish the degree because it's very expensive. Instead I'm looking for an online CS bachelor program satisfying the following criteria:

• It accepts international students.
  
• It can be completed in around 1.5 year (taking into account transferred credits, alternative credits and maybe competency-based credits).
  
• It fits into my budget of $15k.
  
• It is a CS program with enough core CS courses to satisfy entry requirement of an MSCS (so IT programs are not qualified), and those courses need to be letter-graded.
  

So far I'm only aware of the BACS program from TESU. I plan to complete as many alternative credits (i.e. from Study.com,...) as possible to minimize cost while still maintaining a reasonable amount of CS courses taken from TESU (to have them letter-graded). Specifically: 

• General Education Requirements (60 credits): Fulfilled with transferred credits and alternative credits
  
• Electives (21 credits): Fulfilled with transferred credits and alternative credits
  
• Computer Science (39 credits): Fulfilled by taking TESU courses
  

My questions:

1) Do you think 39 letter-graded core CS credits is a reasonable number to satisfy entry requirement of MSCS programs? Should I take less courses from TESU (to save money), or should I increase the number of courses taken from TESU (e.g. by allocating the 21 elective credits into extra TESU CS courses) to have more letter-graded CS credits?

2) Does TESU's full-time flat-rate tuition schema have any upper limit on the number of credits per term I can take?

3) Is it doable to complete 39 credits of CS courses within 2 terms? I'm working full-time but can dedicate around 20+ hours per week for the program. Also I think my work experience may help speed up the learning.

4) When doing a large number of courses per term, will tests/exams overlapping each other become a problem?

Thanks for reading my post. Any advice is greatly appreciated!