VFR in Belgium
Have gone around Europe IFR but have to do a VFR flight across Belgium next week and would like a bit of advice. Would like to go at 4500ft but this is in the class B, would this be ok to do if filed before departure? Would be much easier than trying to avoid it all and don't fancy having to stay under it at 1000ft in areas or prating about flying round all the sfc airspace areas. Are they generally accommodating with VFR stuff going over Brussels (city not the airport to the south) and across to the French border or is that going to be more trouble than avoiding it? Any help is much appreciated.