smallest diamond tarp

[kobold]

hi everyone i need some feedback on the size of a 7x7 square shaped tarp in diamond config, for one nighters in good weather, but when i still want to have something with me just in case. the diagonal would be 9.9ft so that should be enough for my hammocks (?). pitching in hennessy style is ok rather than going much bigger... i was thinking 8 tie-outs. it would be my first cuben