It sounds like it is not possible to get the full bonus for the two Amex Hilton cards. Is there a suggested application order to get the max bonus from both cards (free and Surpass)?
If you're looking just for the most Hilton points, you might want to try getting the high AA miles sign up bonus cards (up to 75k or 100k AA miles per card) and transferring them to Hilton at a 3:5 ratio (see my posts above #52 and #57). Obviously, you can try to get both and get the points and the Hilton card benefits.