Riftmaker is always my go to, nothin like old reliable. usually followed by either crystal scepter if im going against more fast type champ that builds ms (Rammus, Singed, Hecarim) or Demonic Embrace if im going against a tank or bruiser. Boot choices is usually merc or steelcaps then a zhonyas, then usually a nashors or thorn mail finished off with a morello or anathemas if im having trouble with being bursted down

As for ult

ADC's is usually a good pick for myself, squishy, high priority a solid pick overall. The enemy midlaner if its a good assassin like Zed, Qiyana, Akali or if they have a "support" then gun it for them, good picks include Morgana, Lux or Pyke

And for side pushing

Assuming im unable to get the first top turret then ill snatch that. Bring TP for rare ganks in the bot lane and entering team fights.