TESU Degree Help Please

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I want to pursue a BA (communications, history or english) from TESU and I've been reading this forum for a while and still really have no clue how to put together a plan. I know the basics, but there are just so many little nuances, that it is a little overwhelming. From what I can tell a BA degree from TESU should be the easiest (most resources and tests available) to tackle, but I don't know how to piece them together. Some of the things I don't fully understand are:

If there aren't enough CLEP/DSST courses for a degree, where do I get the other credits?
TESU doesn't give grades for test passes so will 1 online class from TESU be enough to obtain a GPA?
Is this something that's possible in 6 months?
How much test prep do people usually do?

There are many more questions. I'm just trying to figure this all out and there is so much info to sift through. I've seen tons of spreadsheets, but haven't found any specifically dealing with a similar path.

I'm really just trying to figure out which exams will transfer for which courses and how possible it is to test out of a whole BA degree from TESU. Any help would be really helpful.