I get attack speed after mid game, I believe that in early and mid game it's a trade off between getting pure AD and a lesser item with AS. I always choose AD because of how I like to play mf. I rely heavily on double up and my ultimate to do the bulk of my damage and I find that the only times where I am consistently hitting enemy champions are during the phase after I have used bullet time and we are chasing them down on low HP.

Choosing whether or not to level up 'Make it rain' or 'Impure shot' first dictates how you are going to play mf. I used to also level up impure shot first and I am not saying this is bad but I find that it makes me play more aggressive as a mf. It makes you want to auto-attack more and expose yourself a little more at the frontlines. Because of how difficult it is to effectively position yourself to set up a good bullet time this is not the mindset or play style I prefer when playing mf.

I always level up 'Make it rain' first because of its slow and damage. I find that at times the only thing stopping a melee char from getting into my face is 'Make it rain' and the extra slow is important for my play style. I know it does not scale with AD but I am mainly getting it for the slow and I like to hang around the back of my team and come in once and use 'Make it rain' on the edge of my casting range to slow, crowd control or to set up bullet time.

I like maxing impure shot last because by late-game you have to change how you play mf and transition into a more aggressive and less bullet time dependent champion. It is only by late game that I get AS and start using 'w' on the frontlines to cut down enemy champion's health. Thus I max Impure Shot last.

On a side not thank you for the input, I will work on this guide and will try to post photos, I still am not sure how 'code' works and will try to find some information to help me build a more comprehensive and visual guide in the future.

the guide looks very promising its just that, to most people, walls of text are not attractive. I would recommend using things like this
Miss Fortune
You can also use colours to highlight IMPORTANT! text. This will help make your guides interesting and alluring to read.

As for the items. No attack speed? This always seemed really core to me on mf, despite her w so, i would love to hear your explanation on not getting any :).

Skill sequence!?!?
What the..., make it rain, leveled first, what are you thinking?
You realise this is the only one of miss fortunes abilities which does not scale with AD what so ever, her w, you could ague doesnt but the extra atkspd it gives you certainly does help you damage output.
So, for now, i will not -1 but i feel as if i should, but i want to give you a chance to either explain and persuade me or make changes and respond to my criticism.
i'll be back