Nothing to worry about. The beauty of the R2 system is that it all talks, so you don't have to worry about mixing manual, ETTL, etc, all on the same system.
If you're wanting more power, the AD200 will do it for a costly amount but remain super portable and versatile, while the 360 does more power for cheaper, but at the expense of bulk and extra cables and stuff. Personally I'd get the AD200 as it's already more powerful than a few speedlites on its own which does the job and can perform fill in full sun as it is, so it's plenty powerful to me for it's flexbility and size. I think the 360's are just too big, cumbersome, cables, powerpacks, etc, compared to the AD200 which is basically a strobe that is about the size of a speedlite, it's truly wonderful. If you need sun stopping power though, the AD600 is the way to go unless you want to fiddle with lots of smaller lights and combine them to make something around that powerful. I use a 600Ws all the time outside, and I think I'd probably be fine with just the AD200 frankly.
So my vote: AD200
You're good to go. The R2 system is really great and inexpensive for what it is.