Halfway requires more than 700 miles of driving in back to back days, being on the road for more than 14 hours on each of those days.
No. You can not safely "stay at the halfway point" and make this driving in 2 days. Period.
This is not a discussion about "taking your time" or "seeing things along the way" We're talking about the minimum amounts of time you need to safely complete this drive - doing nothing but driving - and for that you need 2 overnight stops. Anything less will be putting your lives and the lives of everyone else on the road in danger.