Jess
You know I do not use QBO for business, but this app I was looking at is interesting - at least the write up is, and it might be what you need
https://apps.intuit.com/app-b7qsvrszq7
That said, I have not used it. But the pricing for what you have told me is your volume might make it out of reach. And I would email and ask if it is multi company or do you have to subscribe once for each company you use it for.
I run three businesses too, not with your volume, but I have found that for me, add on utilities just add to my time, and really do not save me any. (and that is not counting the time to set it up, learn it, debug the working on my end where it is not working the way I understood it to work) And there is always the issue of inter-operation when something changes, QB or the app, or the operating system.
I dedicate the first few hours of the day, to each business catching up on overnights, then the rest of the day it is as it happens for which one.
