I've alreadry started paq8sk13 test on enwik9. If it wouldn't be so hard, I'll finish it.
But - @suryakandau - could you use less memory usage to your version?
It's important due to time spend to compression.
Compressor which use less than 32GB like paq8sk7 spend about 31h to compress enwik9 with -x14 option.
Compressor which use more than 32GB like paq8sk13 spend about .... I don't know maybe 55-60h to compress enwik9 with visibe common usage issues with laptop....
There would be only few man to test your compressor. I'm off..