One request: make sure that the first few of the milestone after orbit are mun fly by, mun orbit, mun landing, duna fly by, duna orbit, duna landing. I just got "Fly by Kereksus" after orbit kerbin which is impossible without the coniderable cash influx from the explore mun and explore duna. Rendevous is evil without the presise calculations done by people that are not the pilot in real time.
EDIT: I just realized that unaccepted milestone missions despawn after a few days, but it can still be annoying to wait untill they do