Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
It might be good for Battle Tower. I think high defensive stats would work well, maybe defense and HP.
I would suggest Serebii for when Black and White come out. They seem to be giving interesting new strategies for the up-coming releases. The Battle Subway looks interesting. The IVs will take about five hours to make good I'd wager.
Ask in the Simple Question Simple answer thread. As for the set, don't do that. Stall gets beaten in the battle tower, and for offensive teams you would want Calm Mind instead of Aqua Ring so you actually do something while you sleep. Check the analysis for ideas: www.smogon.com/dp/pokemon/suicune
EDIT: You're also posting in the wrong place. This is the UU forum, and Suicune can only be used in OU and Ubers.