I bought my first camera bag with my first DSLR. Had to buy a bigger one a few months later to get all of my kit in one bag.
I also bought my first tripod at the same time, a Hama Star 62. I bought a Manfrotto a year later.
I'd suggest to you that you seriously think about what equipment you are likely to buy in the next few months and buy a camera bag to accomodate this equipement as your first bag, if your budget allows.
Even more so with your tripod - get a good brand that is sturdy and built to last and make sure you get a decent head that is intuative and easy to use. Go to the retail outlets and try them all out. Manfrotto have the 190 xprob as a good entry level tripod, and they do a really good head - the 804 RC2.
As for your lenses, well it depends: it depends on what you want to shoot and who you ask for advice, we all have favourite set-ups, but this tends to reflect the kind of pictures each person likes to take. As you haven't got your camera yet it will be difficult for you to know what you like taking pictures of.
Mots people will tell you to just get the kit lens and spend a few months finding out what floats your boat. This is good advice. You may not take to photography, you never know.
But if you have the money and the passion then maybe you could look at a kit deal that includes more than one lens when you buy your camera. It's a buyers market out there, don't forget to haggle!