Absolutely - come to an AOC operator knowing EXACTLY what you want out of it and be completely honest with us (ahem, them, no advertising of course...). Most of us (them) have heard 100 different reasons for owing business aircraft and hardly any are the same!
We, and others, give good, honest advice - for free! Yep, you heard it here first! Free!! We've got very very little to gain by not being honest and a reputation to uphold to prospective clients - which all seem to arrive by word of mouth. Even if you only need our support during the purchase, the introduction or during the first few months, I guarantee it's money well spent.
The only comment I would make about ssg's post is that things are very different in Europe to the States. Costs aren't the same and there is less support over here. Everyone has something to add (Single Pilot Ops maybe don't require quite as much CRM...) so I wouldn't dismiss people who've not been through a startup before to be without merit.