If the enemy has more AP champs try like this
Why Merc boots cus of thenacity Aps usualy have some snare bind or sth
Why 1stly going for more mana? Harras them! Make them go b and lose exp and gold youll win your lane like that. To max out your damage once you get Sheen go Q-(2 sec delay)-E-hit-(2 sec delay if posible)-W-Hit. Your pasive is going to proc 2 or 3 times i think.
Why Zhonyas? Well lets say that their AD carry started to be annoying by focusing you. Youll reduce 65% of his damage with 130 AR but he will still going do kill you if you dont kill him quick enough. And youre lacking on some damage as well.Now remember during laning ONLY FARM AND HARRAS if you can kill some1

Why boots of swiftness? ADs cause big damage on close range so when you harras you will be trading damage with them you need to hit and run them.
If they start stacking MR choise betwen Malady and Abysal. I recomend Malady if youre good at focusing one target if not go Abysal.
You noticed that lich bane is not included here. MR from it will be wasted and the proc is good for squishies usualy. Why rushing Heart of gold? Well its a snowball item by the mid game youre gonna have 800 free gold and thats alot from something you will use later.

I tried this out when I raged when 2 of my teamm8 left in 57th minute and it was 3v5. I can just say that her passive totaly rocks. Going AS onhit is really good. I play her like that now.
Ionic spark and Malady are realy realy OP. Her pasive does AoE damage So does Ionic Spark. Guinisios Rageblade is good as well since youve got AS it will stack quickly and give you more AS/ Tryniti force is insted of boots :D but it turned out that it was really good due its 15% crit chance it was funny how they died before their help bar reached 0 it was late/ Sunfire Cape I dont know why I took that honestly.

I used Surge and Flash
Mpen reds
standard yelows as in my guide
Force blues and quints

I was playing against a squishy more AD ppl thats why I took Force quints and blues

You should FARM and play DEFENSIVE and HARRAS from time to time when the laning phase lasts. After that you should focus their carry and only that if there are more than 1 focus their AD carry the stronger one. The suport after. On lower lvls you usualy on your own teammates are lousy they are worse later believe me. Well just FARM and play defensive that probably the best one every good player will give you. And dont chase for the risky kill.