Just something I wanted to share with you since you're planning on printing in ABS... I'm sure you already know that I'm currently printing mine in ABS, 3 walls, 20% infill at a .3 layer height. I have sliced my parts into lots of smallish pieces to fit my smallish print bed, so I've been assembling/gluing/filling/sanding quite a bit. From the many hours I've spent working with the ABS prints of the MPSB files, I feel that I can confidently say that you shouldn't have any issues regarding the parts cracking or breaking. ABS can really take a beating. The nice thing is that it's strong but flexible. I've dropped my fully assembled ABS parts on more than one occasion, and they just bounced off the ground like gravity didn't count.
I printed my ab too small for my torso (currently printing a new larger one). I had to literally stretch it around my waist to get it on- a LOT. The first time I tried it on, I was terrified that the whole thing would split because I had to stretch it so much. But it didn't even crack! I tried it on dozens more times after that before I decided that it was too small, and it never cracked anywhere at all. ABS is awesome!
And you can always print with less perimeters and have more flexibility, too. Just another option for ya! Looking forward to seeing your shore come together!