65% sounds better to me than 58%, but everyone has different opinions on this. unfortunately, hatching is one of those things where every situation is different (your household air humidity effects what's in the bator, your thermometer may be slightly off, your hens may not pass good genes, etc) and the only way to really learn is to just try. give them another 24-48 hours, it IS normal for chicks to take that long. if everything goes well, then great! don't change a thing. if a lot of them fail, then, take good notes and try to learn from the experience. something very very helpful is to do an "eggtopsy" on the failed eggs, and compare your findings with known incubation problems... sometimes you can diagnose what went wrong, and tweak your settings for next time.
whatever happens, don't blame yourself - even broody hens rarely hatch 100%.