Is it a good idea?

[rachel83az]

That's 19 credits with a grade of C or better. That's actually really good! You need 5 more credits to have the required 24 RA credits + the 6 credits from the capstone & cornerstone to reach the 30 RA credits that are necessary for a Bachelor's from TESU or COSC.

You might want to consider doing the 16-credits-in-one-term trick to get enough residency credit to not pay the residency waiver fee at TESU. This is where you take:
Capstone
Cornerstone
Jane Austen: Pride and Prejudice (ENG-298)
3 ePack courses https://www2.tesu.edu/listallc.php?type=EP (ePack courses are like TECEPs except you pay full price for them and they count towards residency credit; TECEPs do not count towards residency)

You take these in one term, paying $4639 for your degree. https://www.tesu.edu/tuition/flat-rate-tuition