Please help with AoF Ice shot/Burning Arrow build!

So i've been wanting to use AoF a bit since I got back into POE a few days ago. I have a few questions about how it interacts with certain gems/items.

So AoF converts 50% of phys to fire. How do items like Cold to Fire and Blackgleam work with this?

My calculations (i'm sure theyre wrong as I do not know what order these go in) are as follows:

100 pdamage (natural attack)

Ice shot
60pdamage 40c

Cold to Fire@50% lv6
60p 20c 20f

AoF
30p 10c 60f

Blackgleam
15p 10c 75f - is this end result correct? So with Ice shot + Cold to fire + AoF + Blackgleam i'd be doing 75 fire damage?


What would be good supports for Ice shot for AOE and Burning arrow for single target?

I was thinking:
IS - c2f - WED - Chance to ignite - Inc Burn dmg/ele prolif/LMP - life/manaleech/conc/pierce/ele prolif

BA - WED - PPAD - Faster attack - life/manaleech

Very confused on which supports will work best.

Here is the tree at 90 points, no BM


Starting from marauder, planning on getting PointBlank and using Chin Sol. Not sure if it will be worth it to use BM passive, as this will likely not be an aura heavy build. Will also be getting iron grip. Any other suggestions/feedback?

Thanks!

^

Anyone? Not FOTM enough I guess?