When I chose to use cloth diapers, my main motivation was money, so I went with what was highly recommended while still being cheap, namely, Chinese prefolds from clothdiaper.com (some diapers are too thin to really be called diapers, imo, and really ought to be called burp cloths; but these are thick and absorbent). I used diaper pins (get a whole bunch of these at once, so that if you lose them, you won't have to spend a lot on shipping to get another pair). And for diaper pants, I used NYLON (not vinyl) diaper pants from TLCare.com. The vinyl ones got holes after just a few weeks, even though I didn't dry them in the dryer; the nylon ones lasted literally for years even washing and drying them in the hottest temperatures -- I tossed maybe two or three of them (the inner lining finally rubbed off and stopped being water-proof), and I used them for both of my children, with each child being in each size for several months at a time.
My older son was about the age of your baby when I started using cloth, and I got 3 dozen of the large size diapers (they had some "seconds" which were cheaper than their first-run diapers, but they worked just great). With shipping and everything, I think I spent about $40-50 for that, although I did spend more later to get extra diaper pins and the **nylon** diaper pants from TLCare. I got some small/newborn size diapers when pregnant with my younger son (and assorted sizes of diaper pants for both boys, as needed), and that lot of diapers (I got 4 dozen, although that was probably too much) was about $50-60.
For the diaper pail, I used some 5-gallon buckets I had; but didn't find any accessories to be "must haves." When the kids were older, I used the small "newborn" size diapers folded up inside the larger diaper as a "doubler," but didn't and wouldn't purchase anything special. [Although, other types/brands of diapers *would* need doublers; that's one of the good things about Chinese prefolds -- they're so versatile!] A lot of the time, especially as the kids got older, I ended up putting them in disposables when I went out; but if I had to change their cloth diaper, I would just put it in a plastic bag (like that hold groceries) and take care of it when I came home. And for wet wipes, I would sometimes still use commercial wipes, but more frequently just use washcloths (cut in half) wetted with water right before use, or, for on the road, have a wet washcloth in a zip-lock type baggie.