There is risk, what if it isn’t 5-3? What amendment would they succeed in adding the the constitution if Trump loses in the SCOTUS?
Well Guam could tip over too. :-). But seriously Trump can issue a new EO and/or just ramp up the vetting requirements so nobody complies. He could also wait til Gorsuch is seated and then put another travel ban in place, wait for some libtard Dist judge to put a stay on it and then go to the Supremes. He has a lot of ways to go.
Personally I think this 9th circuit decision is so weak that even one or two libtards Supremes will vote to strike it down. So I would not waste time going back to the Dist court.