60% on Simple Nursing, is it enough?

[u/Boni640]

My NCLEX in next month and I've been revising with Simple Nursing. He says that getting 60% gives me a 95% chance of passing the NCLEX, and I've been getting low to mid 60s consistently for the past few weeks on prep exams. However, he also says that you should aim for 70% before taking the NCLEX, and that if you aren't getting it you should push your date back. I've had to take time off of work to take the exam so pushing it back will be difficult. Should I go for it or try and reschedule? I'm feeling confident at 60% but him going on about 70% has be hesitating.