Take what I say with a grain of salt because I still do not have the chance to go hard on online dating. Girls are still scared shitless to go out, from where I'm from.
If I were to really pick: your photo with shades and a brown jacket (either is good), you reading a book, and you in a white shirt in a cafe without shades. But to be fair, your photos are way better than mine, and you practically can't go wrong with any of them. You can basically cycle from here if you exhaust your current pics.
I'd also echo chado. Have a goofy pic, a social pic, a pic with a girl, and some smiling pics. Gonna do these in my next photoshoot.