Me to MFMWKE: Hey can you do some maths for me? 
Him: [maths stuff] ...it’s a difference of 2-3x, which if you go conservatively (using the 3" value) and target 1J/cm^2, you probably would still end up in the no more than 3J/cm^2 range... 
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HERE I MADE YOU A SPREADSHEET"

<3<3