your shape looks very similar to my 5 finner ( top pic ), also the 6 fins is super critical when it comes to placement and size...what do you plan there ??? good to see some different shapes....
If I was doin another, I would use the McKee set-up plus 2 small fins a few inches up and uas fins all quite a bit smaller than standard sized for the board....seemed to work best ( the smaller fins that is ) definitely have the smallest fins in front, then the biggest, and another slightly smaller set in the tail...just my thoughts after shaping and riding a few of these...keep me posted if you can...good work...