Okay so I'm gonna pass on the manfrotto head. I'm not that big into tripods anyway, it's not worth the extra ~90 it'll cost to swap to manfrotto head, plates and FastenR-T's instead. I prefer the solid nature of the FastenR-3 as well.

I've ordered the RS-4 with 2 FastenR-3 and the SLR-Zoom w/ ballhead and 2 QR plates. I want to have an extra of each on the trip and they won't go unused either way. If I decide to get a serious pair of legs in the future, I'll think about switching over to a manfrotto setup and selling the joby head. It was very cheap when bundled as a combo with the SLR-Zoom.

One thing that I didn't consider is that, unlike the canon strap, the rs-4 can can be pinned in place by the toploader's strap and not restrict camera movement. Awesome! It's good to know that it'll fit around the lens in the toploader if I want to pack the whole thing away. I have the older toploader, but it's the one the 75 replaced so hopefully it fits too. I'll get them in a couple of days and let you know how I like the combo.

I also ordered cheap knock-off versions of the RS-80N3 and RC-6. Based on the amazon feedback, The rc-6 has a chance at being DOA, but at $7 for both shipped I'll be fine with just one working. The 80 will be really useful for long exposures, especially on the shaky joby legs. RC-6 would just be good for taking pictures of my girlfriend and I together but not essential.