Unfortunately there is no way to "better your chances" of getting one hotel over another. The lowest price i've seen for a 4* hotel in SoBe is $70, and go as high as $90 or so. Since you have so many rebids available, i would start at $65 and raise your bid by $5 for each re-bid. Since you have some time (and if you really want the Crowne Plaza), you may want to stop bidding at $80 or so, since i the Crowne has one of the lowest Priceline rates i've seen, and then just re-try your bid in another week or so.(not going above $80 would rule out any other 4* hotels that have higher rates... but