And welcome to POTN...
They will be a bit more than you plan to spend, but I think I'd get the 17-55/2.8 and 70-200/4 (IS if you can stretch your budget a bit farther).
I suggest don't get a dedicated macro lens yet. You can use macro extension tubes on the 70-200 for a while. That will be just fine for flowers, smaller insects will be a little challenging though.
Later on, add a macro lens is you still want one... I'd suggest look at the new Tamron 60/2.0, since it has larger aperture than most and should double as a portrait lens better than most macro lenses.
You will find 70-200 not really going to be long enough for a lot of wildlife... especially smaller critters and birds. Start saving up for a 400mm or longer! An alternative to the 70-200 is the 100-400, but that would gobble up your entire lens budget and then some. Sigma 120-400 OS, 150-500 OS or 50-500 OS might be a more affordable alternatives. There are some reviews and comparisons on the Internet that lead me to believe these lenses are all pretty good.
It's water under the bridge since you've already ordered it, but I'd have gotten 60D and had $500-600 more to spend on lenses, personally.