Fish size vs. Tank size

I'mjust cycling my 10 gal right now, and I was thinking of 3-4 corys, and 3-4 tetras, platys or some such. The tank has plastic plantings and some sculptures.

Would these fish get along, and would this be the right amount for the size of tank? Also, how should I stock the tank, 2 tetras, then 2 corys, and so on. Or is there a better method?
 
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