Honestly,
I think you would be better off to buy a decent LLL.mobi from someone then to have 5 of these types of names.
Either that or plan on sitting down for a day with overture on one window and the .mobi whois on the other to find one of the remaining good buys.
It is pretty late to get in the game so I think one of the two options above would be better than registering the kind of name you are registering.
That's just my two cents....
best of luck to you