IO540 is right about the Eclipse not getting to its optimum level for weather avoidance / fuel burn. It flies at almost the same speed as the Citation ii. You will have two hopes of getting past FL200, especially in France doing .62 / .64 :
1. Bob Hope
2. No hope !
You will still be flying much faster than the turboprop, but don't try stretching the range thinking that you will be at FL300 by the time that you are crossing northern France, cos it will not happen.