Hermy's has sissy bars with luggage racks for $299. If you get the bike, I'd kit it out with what you want pretty directly, just in case. The center stand is also costly, but it's sooo nice and it doesn't drag in corners.
I had a problem with oil leaking through the airbox, even after the oil level was corrected from dealer's overfill. One dealer replaced a centrifigal oil distributer thing in the crankcase under warranty, but the problem came back. It was fixed by another dealer who sealed the air box after installing a K&N air filter.
Also, my bird had the grounding issue where the speedometer started mimicking the tachometer. Fixed under warranty with a new wiring harness.
And I snapped the throttle cable once...
Luckily I have not had any coils go bad yet (knocks on wood).
I really enjoy riding my Thunderbird and think it's a pretty solid and handsome steed. Powerful enough not to be boring, ergo's of a standard, lighter than most cruisers, and full of character. Try to get a test ride on it and good luck.