I have already had my hubs and rotors re-drilled to 4x100 as there are far more choices than in 5x100. I have wheels and tires on order now and will post pics when I get them on the car.
If the hubs were wide enough I would of gone for 5x114.3 as a huge list of wheels available but then again, not much in fat 15's as mentioned below.
If indeed the Mazda 2 hubs fit it would be a simpler solution so I hope they do but it was more cost effective to have mine done at a local machine shop.
Rotors are far less important to have precisely drilled so as mentioned by a member on another site where I have posted pics of the hubs, installed, etc, he recommended just getting the new hubs or re-drilled ones and bolting to the rotors then just drill them out yourself on a drill press. Makes since as the holes have to be a bit larger than the studs, the hub is what locates the rotors, not the hubs.
I have a set of Konig Feather, 17x7 and Michelin A/S 3 Y rated in 205x45/17 for my inclement weather set on order, weight will be around 38lbs, cost around $1400 total. I would love to have them wider but for any snow, etc I may encounter narrower is better, I can use these top of the line all seasons as rain tires on track as well, they are very very fast for all seasons.
I will be getting a set of 12.2lb, 15x9, wheels in the end of the month or so for 225/45/15 track tires, either street/track BFG Rivals or Hoosier R6, Rivals I can run on the street when needed or just wanted and they are still very fast on track. Weight for either package will be around 33lbs.
I have a bit of a writeup on it on the thread on another forum.
I have also worked with a BBK company to build a low cost, race proven, 11.75" BBK kit to fit under 15" wheels, two piece rotors, street pads, SS lines, brackets, calipers, etc will be only around $750 to $800 and a larger rotor rear with brakets around $250. Very low cost consumables as in $40 rotor rings, lower cost pads, and again well proven in racing.
Good day
Rick