With the .4mm Hexagon, I print everything at 100mm/s for infill, 75mm/s for perimeters, 70% of that for external perimeters, 100mm/s for non-print moves and 120mm/s for bridging.

The gaps are typical of the version of Slic3r Colin distributes with the printers. I recommend upgrading to the latest stable version. Currently, I'm running 1.1.7 stable, and I'm getting much better results than I ever got with 0.9.

This is a tinkerer's game, though, so you'll probably be fiddling with settings for a while before you get everything exactly how you like it.