There are so many good options for this and so many ways that I'm unsure where to guide you. Leslie's method is a popular one although Bert will guide you away from the Brother MFP. I tend to agree with Bert but it is a cheap MFP and pretty reliable.
I don't do all of the .pdf conversion and importing that Leslie does. I have my staff do all of that and it works well. I just sign off on all of it through AC.
Leslie's Method For me, it was hit and miss. I worked through a lot of the bumps and figured out what worked best in my office.