[MENTION=1890]Hamuko[/MENTION] Ah I see, that's about the standard AD Carry build. I used to use that build, but you might want to try this build, it's worked wonders for me ever since I switched over.
Start with a longsword+pots, get boots 1, build it into a phage. Get greaves/MT, build a zeal. Get a black cleaver and then complete your frozen mallet and phantom dancer. It makes you much less squishy, and you get more damage. Full build would be to add a bloodthirster followed by Infinity edge. I have never believed in last whisper unless the enemy is really stacking dat armor.
As for Riven, I might consider skipping her as I have Irelia already xD but I heard Irelia was getting her true damage W nerfed to magic damage. At first I heard it was her passive, but it's actually her W. It's really gonna deal a huge blow to Irelia, so I'm really sad. And she's not even THAT OP. Her early game is really, really weak. It's only because people let her farm herself up, that's why she snowballs very hard. But honestly, if you let any champion farm in one lane for like 30 minutes, something which Irelia is good at doing, it's not exactly the wisest thing to do is it?
I'm ranting xD