i think estate cars are absolutely fine if your trad only.i used one for years.there are still loads near me with them.no probs.but i think for WFP you should either get a trailer or a van.
when i converted to WFP i went straight for a cheap van.im still running it over 2 years later.
WFP will ruin a car.suspension,the carpets will get wet and stink and it looks very unprofessional IMO.then theres the small problem of getting your poles in and lugging barrels about!!no thanks!
if i were you id sell your car and buy a van,go straight for van mount,get it signed up or get some good quality van magnets and take it from there.
then when you start making half decent money buy a separate car so in effect your van is a "tank on wheels,money making vehicle" and your car is used for leisure and pleasure!

trust me!the luxury of being able to go out in a clean car with no WFP,poles and water after a hard days work is great!!that way you can fill up and do your end of the day jobs then forget about window cleaning until the next morning!!
