There are several groups that have meetings, check the 'get started' tab up top and look for any that are listed there, plus the meetup app and I am on the board of the local REIA. 

For one unit I'd think you could keep track of it in excel or a free database app.

Freddie has similar intricacies, but also does not require a two year history of receipt; https://guide.freddiemac.com/app/guide/section/5306.4If you can use the rental income to drive the DTI down so that you can reduce the down payment similar to that of the FHA product, the benefits of the conventional option will outweigh the FHA option, as I'm assuming you have a strong FICO based on rate quoted with no points.  

It’s more expensive than PropStream, but the data quality is higher.For ARV calculations, if you don’t have access to the MLS, our Backflip App can provide it (it's good).

Meetup is a fantastic app to find real estate meetings around you, and look for local REIA (real estate investor associations) and attend a bunch of meetings.

It took me longer to set up in the app than Airbnb or VRBO/HA, but it was very thorough.  

I have also built into Podio an app that allows you to solicit and award contractors as needed for any of your projects.

Even moving for work (not switching jobs) usually has a reasonable lead time.Yes, your other concerns are also valid.BTW, if I want to verify a bank statement, I ask them to bring it up on the app and show me.

I am not very good at being active on bigger pockets, however I just downloaded there app.

I don't require an app before showing.