I don't know too much (as I'm still waiting on my first piece), but based on what everyone has been saying about hair density, 75% is NOT LESS THAN THAT SAMPLE PIC YOU POSTED...it's actually gonna look a lot more.

Based on pictures I've seen, if you want the front to not aim downwards, then go with flatback (aka spikey) style for the front, and freestyle everywhere else.

If you have lots of hair on the side (temple hair) then this style should be easily achievable!

Hope that helps somewhat =)

Leamon