AOTC American Opportunity Tax Credit - "independent" student

Student status complicates the AOTC so here's my status:

Earned income does not provide over 50% of my support BUT other income does so I am not claimed on my parents return.  (Support is approx 25% earned income,  25% 529 distribution, 25% from personal savings and 25% K1 trust income).  I am under 24 and file my own return.

I am a full time student.  I did not take the full amount of room and board and tuition out of 529, leaving $2000 +/- of tuition to apply to AOTC.  It is my understanding that I can claim AOTC but not if it's refundable.  

So if taxable income is 42,200  and individual exemption is 12,200 leaving net taxable income of 30,000 for a total tax of $924 all of which would be eliminated with AOTC.   
Is this correct?