Personally, I would go with the avid elixir cr's. the Cr's have a bite point adjustment, so you could make the front bite later than the back like you want. However, with the elixir's, unless you put air in the brake lines (bad idea, obviously), you will definitely lock the front wheel when pulling the lever to the bars, no matter what the bite point. This kind of power isn't a bad thing though because with brakes like these you should get good modulation as well, allowing you to reliably slow down the front wheel without locking it up.