+1 for what Astro said - there's likely to be a much better "wow factor" going to the 10" from a 6" over 8" if you look at the area numbers. If at all possible would suggest looking at ways to save space and weight (collapsible), money (IIS classifieds....) and ease of use (small trolley if need be - many threads along these lines here).
Resistance to the aperture fever is futile - you will be assimilated (err sorry - Star Trek taking over there....
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