GOLD status with American Airlines will eliminate 60,000 mile limit. Also suggest getting AMEX starwoods card to use for all places that DO take AMEX so you can "save" you Citibank Card. (It has no fee - posts about the card elsewhere) Also citibank offers the "click card", supposedly for on-line purchases but can be used for anything which does not require you to swipe the card and is free if you already have a citibank AA card - that will give you an additional 60,000 miles per year if you are not elite. If you get a credit line on that card, you can split your payments between the two cards. Sometimes they may limit the amount on the click card, but it also can be raised after you have it.
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DtG