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To simplify my question: Can I just add the 1099misc (from a casino lottery drawing) into line 8c Schdl 1 for gambling income?

If I must show the1099misc on line 8z Schdl 1 then the casino loss deductions get limited by the smaller total W2G's on line 8c. 

My W2G winnings justify itemizing this year.  Your comment that one cannot deduct more losses than winnings is rudimentary common sense. That aspect is the first thing IRS (or anyone) talks about.