To answer your question, if you're going into this whole wedding thing full time, here's what i find useful starting from the most expensive
1. Computer Software. Buying licensed software for each and every computer adds up really really fast
2. Computers and peripherals like scanners, printers, etc. We love our macs
3. portfolio samples
4. lighting gear. I don't have much but some studio photogs have heaps
5. cameras, I'd stat with at least 2 camera bodies
6. lenses, a couple to choose from would be nice
7. lots and lots of memory cards
8. Accessories like light stands, bags
But if you're wanting to start up, the least of your problems is the gear. Anyway, personally i think the wedding market is in a little of a bubble right now, like the bubble tea bubble. I'd wait for it to burst first then see if it's worth your while getting in.