should I???

[Ticklemepinks]

Okay so i was offered the Diamond at a very good price....150off plus instant rebate 50 plus 100 mail in rebate and 50 service credit. the lady was really tryin to get ya girl to buy this fone, but my question is, I wanna wait it out for the diamond pro, but is it possible to get the diamond and use it til the pro comes out, and once it does switch it, and only pay the difference but keep all my rebates??? I admit i'm very impatient and I want a new fone but I don't wanna mess up my chances of gettin my diamond pro... HELP?!?!?!