If you are going to use them, make sure you get the ones that actually bolt to the hub. The spacer type will put a much higher load on your wheel studs.
A general rule in Engineering is for gaps less than 25% of the bolt shank diameter, bending effects can be ignored. The problem is that most wheels use the countersunk, steel wheel type nuts on them which already give you a gap of around 50% of the diameter.
I think the MA61 wheels might use the older tube type nuts. These are a much better option in my opinion.