@Anthony Spallone with that many properties, you definitely need to convert to good accounting software. a good software can handle everything you listed. There are numerous different products to choose from. personally i use quickbooks, so i can only speak to that one. i chose QB in the beginning because most accountants use it or are familiar, and it can scale easily from a small business to large business (and therefore prevent swapping systems as i grew).
First, I highly encourage to you separate your business and personal finances. When you do swap to an LLC, part of maintaining the protections of the LLC is proving its a true company, and not a liability shield. It makes it hard to prove this when business and personal finances are intertwined. I have completely separate accounts and credit cards strictly for my real estate business. After all, you dont need an LLC to be a business. a sole proprietorship is a business as well.
you do not need a separate account for each rental unit. one account can handle everything, and you use the accounting software to differentiate properties. Like everything, there is a learning curve up front, but once you do your world will be much more streamlined. here is how mine works
i have one business checking account. all rent goes into this account.
in quickbooks, each property is its own class. whenever you do a transaction, you can assign a class to it. that keeps all the transactions segregated between properties. one of the best attributes of quickbooks is the ability to run reports. you can quickly and easily run financial reports on just about anything you can image. If you want to know how much you paid Joe's Plumber's service to work on just 3 of the 8 properties in april and may of 2020, you can run that report in minutes. try doing that with excel (and im an excel nerd at heart). profit and loss statements, balance sheets, expense tracking by vendor, income from a particular tenant - these are all reports i easily run (and are automatically updated) on a frequent basis.
as far as receipts, i have been using espensify to track receipts, and input everything into quickbooks (i have the desktop version). however, after consulting with other BP members, i am swapping to QB online this year, and i believe it has its own expense tracking app that seamlessly integrates.
i use quickbooks payments to collect rent. it gives you the option to accept either EBT or credit cards from tenants, and you can turn one or the other off (i dont allow credit card payments). for EBT, its about $0.50 per transaction. for rent once a month, this fee is worth the convenience. there are other systems such as cozi that do this as well, i just chose QB.
i also flip houses, and i use quickbooks for that as well. however, i do have a few spreadsheets i use for major rehabs as well, mainly to assist with project management. you could probably accomplish that in quickbooks as well, im just not that advanced.