It should be fine. It will make loading the bar very easy, which is a nice bonus.
I’m sure this has been asked somewhere, but I can’t find it.
I’ve had to buy a pair of 25Kg plates which are presumably 450mm and the rest in smaller diameter 15K plates. Is there any problem loading up the bar with only one pair of plates touching the ground ? I’ve read a few things which don’t recommend doing that with a 5Kg bumper plate which must be pretty skinny beneath the plastic outer, the 25Kg bate steel plate is clearly more robust.
It should be fine. It will make loading the bar very easy, which is a nice bonus.
Take my advice for what it's worth, maybe nothing, but... I stopped at two pairs of Rogue 45lb Mil-Spec Echo plates. With the exception of my 1.25lb pair, all the rest of my plates are these CAP cast iron plates which are slightly smaller. I haven't had a problem yet.