No sense putting Mreg on blues and AP/lvl on yellow. Exchanging between them u got more AP and mana reg.

just being objective with numbers.

After I can get many things I dislike.

Doran's Start

2nd Rabadon

Runes

No wota

And no, no need Roa on a pure Burst.

Alrighty, i will def try out archangels in the next few battles...i will edit and post the effectiveness for different builds here on this post as i go along. So far what you see is what works effectively for me at the moment...it isn't perfect but with the aggressive behaviour i use in battle, to me its effective
i average about 5-7 kills a game with around 1-3 deaths..... i do have bad games but its usually due to external problems with the internet or feeding problems from teammates.

try out an archangel, that will burst your power up to infinity, and try to get viod staff last, because it is more effective if enemies stack MR, if they dont you will not need it at all. and swap your yellow and blue runes in order to have both primary

ROA can be used as a replacement for the second deathcap too, but again, it depends on entirely how your team is doing and the enemy composition.
What i posted here is just the build i usually do as well as the strategy i use in mid. Anything beyond the first deathcap and void staff is entirely up to the player and their needs in late game.

No ROA? It's a pretty core item for AP users.