A nice camera back would help keep everything together. I got this bag recently and I love it so far. Posted a recent review on it with sample pics on Amazon showing what I have in it so far. There's plenty of room and it's well padded for my needs.

Also look into getting some filters for your lens like an ND filter, CPL filter and a UV filter.

I've recently started to obtain a few Canon FD lenses to shoot video with. They're fairly inexpensive and can be found on eBay. An adapter with no focal reducer can be found for super cheap on Amazon (and eBay) and one with a focal reducer will run less than $100.