I supose a tank bag and a set of universal saddle bags with a rucksack bungeed to the pass seat isnt enough?
I used to that all the time mostly without the tankbag though. Cant beat a good cargo net and strong bungees IMO. I also used to stretch back into the rucksack for a bit of back rest too.

The bags I used are pretty roomy & not to expensive; and would not require a sissy bar.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1274048750/6#6

How hardcore of touring? Max Morley HD'd his out with boneyard parts and some junk off my stocker (fender rails, sissybar).

You can get Harley's 1950s luggage racks, new, from V-Twin Manufacturing and adapt them to your bike. Instant Tour-Pac mount. Add some repop bubble top bags fairly easily or some boneyard hard bags designed for KH or XL Harleys. They aren't huge, but they look great.

I use semi-rigid saddlebags (Saddleman Desperado), a River Road small semi-rigid tool pouch and a day pack. Can carry a week worth of socks, t-shirts, tools, a few spare pieces (oil, lights, plugs) a couple six packs and a bunch of MREs (I'm a tightwad). Tent, sleeping pad/bag get tied to the apehangers, using the headlight shell (7" steel sidemount, the plastic stocker broke in 98) as the bottom rest.

Sky is the limit on modding a Savage. With no real aftermarket support, anything you can make work is the right way.

tanker's bags are about the biggest I've seen.
paladin's are about the most durable though.

I'd have to ask do you intend to ride double?
If not, look at fleabay for the harley a$$ed trunks.
I'd get a sevier like pallet mount and put it over the pillion for better wt. distribution.  A couple of flat bars mounted to the top shock mount and fender rails should be pretty sturdy.

many styles available...
http://cgi.ebay.com/ebaymotors/New-Scooter-Motorcycle-Tail-Box-luggage-Back-T...