thank you for the nice words,
for long distances you have 2 options,
-first and the most useful is to build a large number of h2 tanks, for example I build around 8-15 h2 and 4 o2 before going to planets which are 1-2 Mm away then refill them at the station
-the second option is to accelerate as much as possible but aim precisely at the planet atmosphere then let the atmosphere do the decelerating and keep a small amount of h2 to navigate to a a safe landing spot near a neutral base on the planet, this is useful if you don't have a station around so you need to scavenge wrecks/asteroids for fuel
autopilot nav assist function do as follows:
-reverse midway: just toggles the boosters that are facing the destination when going over the mid point
-prevent reverse overshoot: automatically stops the boosters then you get to the closest point relative to the destination, this option is what you are looking for