And the New Jersey one the week before. I'm already planning June right now :
8-9 : Le Mans testweekend
10th : finish pictures for CA Guide 
11th : fly to NYC
15-17 : F1
18 : fly back to Brussels
19 : arrive at Brussels, switch suitcases, pick up motorhome and head on to Le Mans
19-24 : Le Mans
It could have been worse
.
Looks like it's not such a rush for you now :-(
http://uk.eurosport.yahoo.com/news/formula-1-ecclestone-new-jersey-gp-073956810.html
Unfortunately not

. Disappointed on the GP being called off, but it gives me a bit more breathing space in the budget for next year.
Might go to the Abu Dabi GP now instead of New Jersey.