You should get a regulator as standard on most compressors, even the cheap ones. You won't get a filter though as standard though. Filters and lubricators clean the air, essential for spraying.
If you go for a HVLP system ( i would recommend Apollo Bambi HVLP sprayers) then you won't have much...
I would say get someone very local to build it for you. You can not beat meeting them face to face even for half an hour and again if you want any changes. Trying to describe changes down the phone is a nightmare.
So yeah stick to very lcoal and try and get a free lancer to do a 6 page website...