How big a sample to know trouble hands?

[Doc7]

I'm loving PT. Only have 3600 hands under my belt since I bought in 30 bucks with the intent to play nothing except limit poker, but I've since run it up to 70 bucks (including an $11.05 KOTKP money finish)

I know 3600 hands is too small a sample for winrate, and pretty much all else except looking at VPIP/PFR. It's also too small to look at specific hands yet (I've only gotten AQs 4 times, while I've gotten some other hands 18 or 20 times). But I'm wondering, at what point do more statistics start becoming more and more interesting/useful for me to look at? Positional, specific hands, suited connectors, aggression, etc?

Is there a magic number at which point I'll be able to look at certain stats, or do I just keep grinding till Christmas when I hit 50 thousand hands and then reload PT for a purpose other than GT+?