It's very difficult to provide specific recommendations without knowing what you intend to photograph. People? Architecture? Landscape? Sports? Wildlife? The lens recommendations change depending on subject type.
I've been shooting for quite a few years and I've managed to build up a collection of gear. Some of it, however, is somewhat specialized -- so I wouldn't necessarily recommend it unless I knew what you intend to photograph. But here are a couple of general recommendations that would be fairly good almost regardless of what you plan to shoot.
#1 The EF 70-200mm f/2.8L IS USM II -- that lens should be on just about everybody's list. It's an amazing lens. I have the original (version I) -- having purchased my lenses before the "II" came out and while the "II" is certainly better, I didn't think the incremental improvement in quality and image stabilization was enough of an incentive to get me to re-purchase the lens. But my 70-200 is the lens that pretty much stays on the camera most of the time. It's an extremely versatile lens in that you can use it for people/portraiture, sports, wildlife... I probably wouldn't use it for landscape.
#2 This one has a bit more wiggle room... you want a "standard zoom" (aka "working zoom" or "walk-around" lens). This is a lens that can be used when you're not quite sure what you might encounter. The EF 24-70mm f/2.8L USM II is the best in class in terms of focal ratio and optical performance ... but it's limited to 70mm. The EF 24-105mm f/4L IS USM provides a little more focal length, but loses a stop of light. It adds image stabilization but image stabilization isn't a big deal in short focal length lenses (generally you can hand-hold a camera steady without image stabilization if it has a short focal length... it's the long focal length lenses that need the image stabilization help.) I have the 24-70mm f/2.8L USM (original -- because the version "II" didn't exist when I bought my lenses.)
If you will be carrying the camera all day, then I'd suggest swapping the factory neck-strap for a sling-type strap such as the Black Rapid strap.
There are different lenses that would be recommended if I knew what you wanted to shoot...
If money is indeed no object... then the EF 200-400mm f/4L IS USM Extender 1.4x is a fantastic lens for sports and wildlife (about $11k)
The TS-E 24mm f/3.5L (a tilt-shift lens... all tilt-shift lenses are manual-focus only) is great for landscape and architecture (but there's a bit of a technical learning curve to using such a lens.)