Vm9 + pfsense + lusca cache how to setup Dual wan with usb broadband + iphone

[striker16]

Hello to all,
I'm very new to this program and programing is my weakness.

I want to setup pfsense with dual wan.

Internet 1 = Usb broadband
Internet 2 = Iphone internet thetring using usb

Internet 1+2  –> Pfsense (running on VM) ->> physical computer.

Is this possible?
If not how can I setup like this

Usb Broadband --> pfsense ---> physical pc ?

I'm currently connecting to pfsense using proxy.
If I understand it correctly, my current setup is like this

usb broadband (physical computer) --> (PROXY)VM + pfsense + lusca proxy --> physical computer.

I hope someone will understand on what I'm trying to accomplish  ;D

P.S
If possible, I want step by step guide (basic)

I have a computer background, Though I'm on technical basis

Thank you again everyone