Your take as to why not KS but why instead more MS and AL could be wrong.
Newt chose to put pedal to the metal in GA. By doing that he garnered a smattering in OK and TN but upped his GA totals. He tried to maximize his GA prize, in other words.
His stated reason about KS was in order to concentrate on the two neigboring states that vote Tuesday. I think his strategy appears to be similar to his GA strategy...how much can he win the other states by, assuming he does win them.
More productive than including KS on his itinerary and expense list, might be his call on it.
Perhaps. However, it has been my observation in following politics for almost 50 years that withdrawing resources is almost always a sign of concesssion. If MS and AL were the prize along, why did Newt put resources in KS to begin with?