You will need 10,000 Hilton points for a transfer to US to get a hit. (850 miles, a horrible redemption otherwise.)

I believe the most Hilton points you can get from e-rewards for a single transfer is 7,000 (for $100 in erewards currency). I believe you can only do this once per quarter, so if you don't already have 3,000 Hilton, I'm not sure this is going to do it for you. It's also an awful lot of e-rewards currency.

Note that even if you get to 10,000, you will only get one hit -- for a hotel transfer. You won't get the erewards hit.