Looking at the datasheet for the AVX capacitors, it appears max current on them is 180A:
http://datasheets.avx.com/AVX-SCC.pdf
The Eaton capacitors are rated for 26 amps continuous and 220 amps peak:
http://www.cooperindustries.com/cont...-xv-series.pdf
The Maxwells have an "absolute max" current of 170a:
http://www.maxwell.com/images/docume..._1017105-4.pdf
Looks like a 6s2p configuration would be safest, so as not to pull double the current rating on the caps?