a lot of people rebuild rc's with m8 stainless button headed allen bolts. they go up to m8 so they are a snug fit in the bolt hole again.
to be honest rc's are a tight fit with the rim and the centre so i can't see anything moving about.
i think if i were to try it i would build the wheels initially with the correct bolts, then replace them one at a time. you will then know that the original bolts have centred the wheel correctly