Income and expenses are tracked in accounting software or in spreadsheets, not by having multiple bank accounts (with multiple sets of banking fees). 

I was wondering if there is a software I can use to combine all these websites on one sole server and work from there?

I am currently a Software Consultant with an experience of 3+ years in the industry, if there is anything that I can bring value to you that is tech/software related I would be more than happy to help. 

However, it’s not time intensive to use google maps or other acquisition softwares.

The one thing I would add to your second list is some type of accounting software, which I'm currently looking for.

I have about 50 rental doors over 10 properties and find myself wanting to put them in a format better than excel to track my PNL per property and as a company.I need something very easy to use (I am a kid of the 80s ...

It was very difficult to get it corrected and an answer from Apartments.com, but they admitted that it was their fault after a software upgrade. 

Most software allows you to send out mass emails or texts so you can keep people interested/on board until it is ready and then you have a nice group of folks that are interested on day 1. 

They are scammers trying to sell a course or software that's not legit.

I use the following sites through my marketing software.