While I have not flown out of Ely in a while,
"What Ramy said".
Ely is not the place to learn XC. You need to be comfortable in the middle of nowhere, but keeping landing places in glide isn't difficult with a working band of 6 to 11,000' above valley floors.
Density altitude is 10,000' at 10am. Stay hydrated and on O2.
If you land out, InReach may be your best bet for communication.
Jim