(There are certain percentages you'll want to look up)-Usually a non-issue, but there are limits on the amount FHA can loan, google "FHA mortgage limits" to figure out the exact numbers for your area.

Then you can record your expenses there and it makes it easy for you and your CPA.Regarding startup costs versus expenses, there are plenty of articles you can find on the subject with a google search.

@Dave Foster Is there a marketplace for 1031 Exchangers to see each other's properties, to mutually aid in the identification of properties to purchase?

Just start googling and get on their buyers lists.

I've been using Home Advisor, Google, Yelp, Angie's List but I haven't loved the results.

It's actually surprising how much it costs monthly/annually when you think about how many thousands of agents there are (google says 180000 in CA alone, my town has a reported 20000!).

Asking questions that can easily be googled is another thing that will turn off agents from working with you. 

Google is your 'friend'...https://www.northamerican.com/migration-map

These software will also set you back at least $200 per month.Gantt SchedulingTeamGantt/Gantter/MS Project - Gantt Scheduling Softwares for creating Gantt Charts & Timelines, & managing tasks.Customizable Business/Task ManagementPodio - Customizable system that allows you to build workflows, track tasks, etc.Smartsheet/AirTable - Provide spreadsheet style platforms with additional functionalities for uploading documents/images, assigning tasks, calendar, images, etc...Microsoft Excel/Google Sheets

I saw it posted on biggerpockets forums and I think I googled it out of curiosity.