yeah, +40 wont fit. dont even bother buying them in my opinion. a bolt on spacer that is 40mm wide for each wheel is not cost effective. may as well buy wheels that will fit.
i think they would be 114.3
there is no reason why your studs wont be long enough unless you use slide on spacers. if you are going to space out a wheel more than 10mm use a bolt on spacer. they come with their own studs so you can still put the wheel on.
hope that helps somewhat