I usually get Rod of Ages but i definitely feel like it may not be the strongest option. I like to get double doran's and then revolver if theres an AP top who will be getting WOTA, and this is noticeably stronger early on. After these items I go deathcap/voidstaff/dfg/abyssal/hourglass/survivability in whichever order based on what I need.
I get sorc shoes most of the time, but merc treads are a must if you're facing a lot of stuns or veigar.
I would only get a rod of ages if you can get it around 12:00-14:00. Optimally i think you should just get straight needless items. DFG to snowball you raba to keep it going and zhonya to keep you alive.
GT: WholeLottaMing LoL: Korean Steel (Used to be iBubbleTea)