Per credit tuition plan at TESC

[Back2College2014]

So, another TESC enrollment question: should I apply/enroll in TESC now or later?
I have about 24 credit hours (from CC and 1 CLEP) and am hoping to complete about 100 (via CLEP and other exams) this year for a BA in Psych. I prefer CLEP vs. TESC exams. If I enroll now, I can lock in my BA program path, but will TESC make me take their exams over other (ie. CLEP)? And what's the best payment option if I register/enroll now but test outside of TESC?

Thanks for all input on this.