Bork gives you a much higher dps than ER first item, because the cdr and passive of ER is largely wasted in fights since you won't get more than 1 arrow per fight anyways. Bork gives you more attack speed, an actual useful passive and a great active, it deals more damage if you only have 1 item, and it's not even slightly close.
It also has the better 2 item powerspike because of the synergy with Hurricane that you already stated.
If you want to go for a scaling build that gets max power at 3 items, you can go
ER->PD->IE, but you won't be as strong on one item. (You will be strong on BF+Caulfields though, but it falls off against champs like Lucian that have a good 1 item spike)