I would think 0 speed would be the preferred iv, you aren't going to outspeed much with 39 base speed :P But not really sure, depends on what mode I guess :)I don't need anything, just give me a few minutes to get everything ready. I'll VM you.
EDIT: When breeding a relaxed Shellos, does speed matter? Should I aim for a 31/31/31/31/31/31 or a 31/X/31/31/31/31 spread? I know some people run Earthquake over Earth Power sometimes.