what do you want to make with this stuff initially?
as i've got a sliding carriage on the table saw and all the stuff i'm working with at present is less than 4' long I've not had to shell out for a chop saw...mind you. when a van load of sawn timber turns up and i've spent all day hand-sawing it down to manageable lengths I've been tempted 
as for the compressor and nail gun, I tend to use joints or screws, so again haven't found a use. But if i were building the workshop out of T&G the nail gun would be high on the list...
i made a lot of initial purchases when i set up a workshop a couple of years ago and ended up with a few bits that never got used. i got a second go at it a year ago when most of my stuff (except the kity) got nicked and this insurance payed out. Some i replaced with exactly the same thing as i had been happy with them, some I changed brands, some i didn't bother to replace and still haven't - it all depends on what you need when.
On a limited budget now I would probably do planer/thicknesser, bandsaw, drill press and router as a starter, and the first few projects would include a router table...
the other drawback to a combi is you usually need to get to both sides of it for the different functions, and given the width of your workspace I'd guess that you would struggle or have to keep moving it...and they weigh 2-3 times as much as a single machine
