Get yourself (rent can be cheaper) Zoom H4n or some other decent portable recorder with XLR inputs, a boom mic and a slate for syncing audio to video. You're ready to go =) Of course you can also add a couple of lav mics to your chain, but you'll have only one spare input on your recorder (which is ok for ENG work, but somehow I feel you're not going to shoot a documentary on 8mm =)