1st Trip - Tips?

I would take at least 2 days to get there. Amarillo is about half way. We like the Oasis RV Park in Amarillo exit 60 then left. Long level paved pull thrus. http://myrvoasis.com/
We like Famous Dave's Bar-B-Que or The Big Texan for steaks.
Palo Duro Canyon is worth a drive from Amarillo if you stay more than overnight.

Others have posted good advice.

When driving our Class C it is rarely over 60 MPH,
saves gas, makes wind buffing from trucks and mother nature easier.
Enjoy your trip. Do not let others on the road push you, it is your rig.

I look at 8-10 hours as my usual max drive.
I usually leave early, especially the first day, trying to plan where I
will be for expected "morning rush hour" and parked by the "evening
rush hour" when possible.

One good piece of advice I read was the 3's.
300 miles and parked by 3PM, some also add stay 3 days.

Try to relax and enjoy the journey.
We make the journey a major part of our trips.

Californians often don't state distance in hours. 8 hours can be 60 miles around here. You are at 544 miles according to one web site. From So Cal, that would be the equivalent of a trip to Lake Tahoe or Grand Canyon. That's very easy to do in one day in a car but for a new motorhome RVer, I'd limit it to 300 miles a day.

My strategy: Leave after traffic the night before and go as far as you can. Then overnight and finish the rest. You can preplan a bit more by figuring how many miles you can get from say 7pm to 10pm or 11pm then find the overnight spots around there.

The other thing I'd say - keep the speed reasonable. You have so many more options at 60 or 63 than you do at 70 when evasive action is necessary.

In the end, all we can do is make sure we have everything maintained and checked off the list, then sit back and enjoy the ride.

BTW, do you have roadside assistance for RVs?

Take it slow, and when the gas gauge gets to 50%, start looking for a place to fill up.

Don't try to make it all in one day... slow down and enjoy... make the drive just part of the whole trip... find a good stop over... ENJOY, don't stress