I got a set of Viking bags as saddlebags. The installation wasn't as straightforward as their video made it seem, but in the end it did work. They give you two options: throw over install or bolt on install. I rode last summer with the throw over option, and recently converted it to bolt on. Honestly, throw-over is mostly better, except that their lower tie off to the bracket is not ideal. Would be nice if they made it 2-3 straps that could actually be tightened up. It held, just wasn't great. The reason I dislike the bolt-on option is that the Rebel's frame is just a little too small to make their bags easily attachable, and now they don't open all the way so I have to fight the lid.
Overall though, I really like the bags. They are big (lots of grocery store trips for me with these), and very solid. They PU leather over hard plastic, which sounds like it's crappy, but in reality it's actually fantastic. They are very rigid, so there is 0 sag. It also comes with a "tail light relocation kit" which really is just a C bracket so you can put the turn signals by the license plate. Biggest issue with that was that the stock Rebel tail lights have two protrusions, requiring two holes, and of a different size. I drilled the bracket to make it work. Not my prettiest job, but it holds.
As for sissy bars, you can buy a Chinese made one for about $100. I got a used one for $90, which worked out well. Sort of a pain to install, but once on, you don't really need to take it off.