Even though you would have to wait longer to get your stake at the AE, I would still recommend you get acquainted with the system. BTCTalk has known to be vulnerable to attacks.

Just some advice.

Being in group 1, 2, or 3 does not affect your stake in any way. The only thing that would effect your stake is if you got it over the asset exchange, if you get it over AE, you will have to wait a couple weeks after launch to get your stake.

I am not sure of the exact distribution method, I believe it is still under discussion.