Good topic.
Let's put it this way, the good folk of the Territory are gagging for some quality NBL basketball. Yes, we have two good SEABL teams (AIS / Gunners) but the next step up is huge.
I think the game will and should be played at the AIS Arena. Belconnen is a decent court, but not NBL worthy. Whilst there is some room for spectators at Belco, you could only probably fit 500-700 people in, and even then it's gonna be tight. I don't think Belco has the TV issue covered. If you want a glimpse of the court at Belco, the link is (and you'll see what I mean about spectator comfort)
http://www.canberragunners.asn.au/index.cfm?event=showGallery
The other option would be the Southern X Club down in Tuggeranong (the Caps sometimes play there). Nice courts, but I'm just not sure of the spectator issue again. More seats than Belco, but possibly not enough.
I think you'll find that people will come purely due to being a NBL game. The Kings are hoping the 'novelty' and 'intrigue' factor play a part and assists in drawing a crowd. It's been a few years since the Cannons folded and we've lacked some top notch ball in the Capital.
The one issue that may cause some problems is that it's the Sydney Kings. These is some rivalry between Canberrians and the morons up the Highway, but nothing like the SA / Vic thing. I would of preferred the Hawks to come, but hey, I'll take Boy Goorj and his band of merry Boomers.
Basically I'll be going, purely because it's a game of NBL, and it doesn't hurt that Ingles and Holmes (from my point of view) are suiting up, not to mention that useless turd called Heal is playing against his old squad and coach. It's gonna be an interesting game.
I do understand the Kings attempting to get into Canberra. Hey, if the AFL Kangaroo's can call Canberra a second home, then so can the Kings. It's an untapped market at the moment.
The funny thing about Canberrians is they jump all over a winner, but as soon as the club struggles, the fans drop off. When the Raiders will ripping apart the NRL you couldn't get a ticket, same as when Phil was here and the Cannons were winning, getting a ticket was next to impossible. It's currently happening with the ACT Brumbies. Support a winner, but they don't hang around for the tough times, hence the demise of the Cannons (there are other issues which I won't get into).
Overall, a good idea and I'll think people will be surprised one way or another about the support that will be generated.