I don't think there is anything at all wrong with your approach from a safety perspective... so long as your wheels are rated for pressures at least as high as the tires mounted on them.
The problem, comes from a handling and ride comfort perspective.
When my 07 40DP was brand new, it came with the tires inflated to the 120# max. On my fist trip, I feared that I had made a horrible mistake by purchasing this coach.
It seemed to wander all over the road and even the expansion joints on the freeway seemed to be transmitted all the way through the coach and up through the steering wheel. It was a nightmare to drive.
Now, on this first trip, the coach was very lightly loaded and tires were still inflated to the max.
After reading up on the topic here on this forum, I got the coach loaded, weighed and then dropped the inflation to 95# per the Michelin inflation tables and it made all the difference in the driving experience and ride comfort.
That's my story and I'm sticking with it.