You're only a tad over and should be fine, but you also likely have cheapo tires being OE tires.
Couple options, spend about $50 a tire extra by buying some good d load tires and then selling your new used current tires.
Or unload some stuff out of the trailer.
Or turn the radio up and mirrors down where you can watch your tires, lol.
I've hauled the same I'm sure, typically without issue.
One thing you want to make sure, being a new trailer, I'm guessing it has torsion spring axles. They are VERY sensitive to weight distribution between the 2 axles. No modulation like leafs with the rocker in between them. Make sure your trailer is as close as possible to dead nuts level with everything loaded up. Nose or tail high much at all will put more load on one axle than the other. Also being new, if they're grease able hubs, make sure they're actually packed full of grease. Same if they're oil bath I suppose. Mfgs sometimes screw this up and Mirage doesn't have the best rep in the snowmobile community for quality or QC. As with anything new from a small mfg, a dry run is in order so you're not working out the bugs on the side of the road.
Good luck on the move.