First id like to write how many GF is maximus you can achiev
For Boots, Pants, Belt, Chest, Shoulders, Gloves, Wrists it has 25%.
Amulets have cap at 40%.
Rings have cap at 20%.
Helm have cap at 25% + socket which can add up to 31% making it 56%GF.
For weapon and offhand slots
Shields have cap at 25%.
Quivers have cap at 20%.
Offhands for wizzard/witch doc have cap at 20%.
Wirts oreginal leg have cap at 10%(1h mace).
Ziggurat Tooth ceremonial knife have cap at 20%GF.
So if we count all GF items except weapon and offhand we get to 280 + Gem up to 31GF = 311%GF.
Followers
For follower only viable one is Templar who can equip 25% GF shield + 10% GF writs leg meaning with 2x 20% GF rings and 40% GF necklace making him up to 115% GF.
All followers' total GF is divided by 5 (20%) thus adding 23 GF to your current pool.
meaning:
WD with ziggurat and shield with perfect templar gets up to 379% GF.
DH with writs leg and shield and Skill Ferrets with perfect templar gets up to 379% GF aswell.
Anyone else Wearing shield and Writs leg with perfect templar gets up to 369% GF.
Now for Nephelim valor stacks and shrine:
Once you get to 5 NV stacks, you get another 75%.
plus getting a shrine gives you 100% GF bonus
as for Compleatly highest value
WD and DH can hit 479% GF.
Everyone can hit 469% GF.
Now that we know the CAP we can think of other improvements in our GPH For bots who run Area core extremly important stat is Pick up radius and its sad that best picup radius for areat core is 35-40 Altho if you are runing sharktooth script you will need only around 10 pickup tops except DH where ferrets can pick up all gold in time before you pick up all stuff and teleport to town so for DH there isnt any pickup needed.
As for casual playing 20 pickup radius is enaugh.
Another important stat is movement speed. Cap for movement speed is 25% where boots are capped at 12% movement speed and writs original leg is capped at 7%. MS extremly important stat in every Gold find run as it makes all go faster and having some passive skill to get on 25% MS is adviced to maximalise profits.
I belive thats all i wanted to write so GL with GF runs.