Hi Barry,
We do travel with a compressor, but my tires only need 80PSI. I think you should consider a 150PSI compressor with tire pressures like that. Otherwise you could be there a long time waiting for the compressor to cycle on and off enough times to fill your tire. If you had a 120 PSI compressor, you wouldn't have much difference between your tank and tire pressure and it would take forever to top the tire off, if the tank even got low enough to kick the compressor on. With a lower pressure compressor you could be stuck in the pressure range of where the compressor kicks off and turns back on which would be a pain. Also consider what you need to power it, either a strong enough inverter or a generator.