Oil Change Viscosity Mistake

I just spaced at the parts store. In the stack of 5w-30 oil there was one box of SAE 30, and without noticing, I bought it. I did not realize it until after I had already poured the required 6 quarts back into the engine.

2005 Itasca with a workhorse chassis, 8.1 engine. In Southern Cal and will be traveling through AZ, NV and Utah.

Should I just drain it and replace it or will I be OK?

Thank you for the help.