It all depends on what you want to shoot. The 17-55 is a great lens and one I would definitely take with me for general walk-around. The 60 Macro is another for those outdoors insect and small creature shots. The hole I see here is the wildlife that doesn't want to let you in too close. I would consider taking a look at something with more range to fill that gap. Perhaps renting the 70-300L to fill that gap, granted that says take all three so you need to consider something to carry these in as well.

Mostly it depends on what you want to shoot. How much range do you need for what you expect to be shooting - and then the image quality you expect from that particular lens.