Apart from the IP being a bit impossible the rest of it is good.
I do this with account's I've already cleaned, will get to know the target a bit, say "Just got this account, haven't checked it yet, you can have it stuff as a gift
".
Things to make sure of:
That the last IP logged into the account you're giving away isn't your own, the guy might be playing the same game as you or will just take advantage of this new found information.
That you turn the PM's off on the account your handing over, if he see's it log in right after he's logged off he'll know you've been able to see his IP, where as normally it wouldn't cross their minds.