Originally posted by mrmp3
EDIT2: Good type/brand for tripod?
I understand the urge to go out and get the best all at once. You can spend yourself broke pretty quickly that way. I too would suggest slowing down. A spare set of batteries and a bag to carry the stuff you need around (an old back pack, etc.) is all you really need (even an old diaper bag works well - go check out goodwill). Take pictures and make mistakes (don't worry - they are free). You will learn quickly, what you like and what you don't. Also, you will learn what you need based on the style and the type of images you take. That will lead you to your acquisitions. Asking now will only have everyone tell you what their particular style of photography needs are. Go take some images and run in to some problem, then ask questions based on that, then you will have good discussions on what you are doing, and the replies will be based on what you are doing (or not doing).
A tripod, you ask - well, my answer is somewhat opposite to most. I found a really cheap one (under $10) and used it for several years (very little at the beginning, then much more so). I hated several features about it and liked very much others, and learned quit a bit in terms of what I felt I needed. So my suggestion is - if you feel the need, look on Craigslist for something under $10 - it will be a plastic and aluminum one with a 3d pan head, and it will work ok. You may never use it (so you are only out 10 bucks). If you wind up using it a lot, that it makes sense to get a better one. Then, you will know what you like and what you hate, along with what you need. Good tripods and heads can be quite expensive. So, with some experience, you will become an intelligent buyer.
Right now you want to go out and use the camera and lenses and see where you gravitate to in terms of photography. You may hate it and the camera will get little use, or .......
Also - on the Kx - its a really great camera. Even folks with the K7 have bought it to get the high ISO capability. There are very few limitations you will run in to with it. Just, don't get caught up in the needing features - i.e., if only my Kx had this I could do that... There is always another way to solve the problem with what you have, you just need to look for it and figure it out.