Ace Eman

"1. You do not have to follow the perfect ascent: turn at 10km and keep turning until at 70 km. Turning to 45 degrees at 10km and staying there until you're apoapsis is at 75km+ is fine." Not Good. You should start your turn at 8k, click on your nav ball to switch to orbital mode and follow the prograde marker starting at 45% and following it down to the horizon. Stayin at 45% for the entire ascent is not efficient.

You are mistaken. Recently when I programmed mechjeb to lower my periapsis in preparation for my re-entry to Kerbin (I would have done it manually, but it interferes with my drinking tea and smoking) mechjeb went crazy and burned prograde instead of retrograde and put me on an escape trajectory. Luckily i had enough fuel to return manually and didn't suffer any casualties. The newest mechjeb is buggy.