I'd recommend just keeping a journal or Excel file of your appointments and time spent on calls or doing paperwork, including bookkeeping.

Simply the fact that the residents own the homes introduces a whole new set of challenges that other real estate doesn't have.Using the right management software, bookkeeping correctly, and using the right accountant who understands mobile home parks, cost segregation, and bonus depreciation will all be important. 

There are a lot of bookkeepers that can do note servicing if you ask around.This thread had a bunch of great info too: https://www.biggerpockets.com/forums/50/topics/827...

Tenants Zelle to the respective buildings account.I do all of my book keeping on excel.I rent through Zillow exclusively.

You should think about hiring a bookkeeper or a CPA that specializes in real estate and will also do bookkeeping all in one.

Well rounded: Your accountant should be familiar with real estate taxation, but it is equally important that your accountant has a general understanding on other types of accounting/tax issues as well (i.e. bookkeeping, individual taxation, estate/gift tax issues, etc.).

Because when you keep them separate your bank statements are your book keeping.

The biggest part is book keeping and that is outsourced and done in QuickBooks.

If that is the case, QBO will be the software that most bookkeepers and tax professionals are familiar with.

Typically when you end up with significant cashflow or a high number of monthly transactions a bookkeeper or CPA can save a lot of time and make sure things are ticked, tied, and categorized properly.