I have mine at 90k as well. Mainly because I want some leeway to 70k. Its nice when you have a space ship rendezvousing and need to catch up to the station to put it in an 80k orbit so that after some time acceleration you'll be at the same position in the orbits.
Really nice! You should replace the images in the first post with the new ones! Hmm! Upon testing it does seem to be a bit unbalanced as it want's to tip over north all the time after launch. Also, the ammount of fuel is very over the top!