Extensions for 3b/3c/4a hair textures?

I'm looking for some beauty store brands, HUMAN hair extensions that would match with a typical african-american hair texture. I'm getting half of my head weaved, so the front part will be out and I need something that will blend well, preferbly something that can be straightened also and comes in longer lengths (other than 8" and 10").

Any ideas? My hair texture looks something like these, but mostly the first one:

http://www.sosni.com.br/spaw/images/DSCN...

http://rds.yahoo.com/S=96062883/K=gloria...

http://www.hollyrobinsonpeete.com/images...

http://images.zap2it.com/20040721/UPNpho...

Extensions for 3b/3c/4a hair textures?

ooo umm wel sicne your hair isnt straight i guess you will have to go to th e hair store and look at some hair curly hair and or wavy hair they do have extesntions like your hair type,or what about your straighten it our first adn then see hows your hair texture