is 2500 +/- each way road trip pratical in 10 days?

we have made the trip from Mo to San Diego many times and we have no trouble making it in 2 days going and 2 1/2 returning and we avoid the dark, mostly.
With the truck and camper we can average 60MPH. We are worn out after the trip. It is 1700 miles.
To add 800 miles and only 1 more day would make it a race and not fun for us.But it is doable.
And if you hit wind your mileage really takes a dive at the speeds you have to hold.