People are sending me colleague request and there’s not the button to push that used to be there. 

I'd suggest you ask as many questions as you can, there are a ton of people on here who are knowledgeable in many subjects. 

So it may end up costing you $400k within 30-60 days without any financing options.How do people overcome this when you do your due diligence?

I'm in a small town so the people aspect is a huge consideration. 

Wholesaling works different in different cities, people will come on saying get quotes and all this but in Phoenix you have to move extremely quick if it's a good deal.

More people moving to a city is more potential tenants. 

Building a team is something after you build the skills yourself, then teach them to other people to leverage more and more.

This is not my area of expertise, so wise people on this website will likely tell me not to venture into this!  

Then when you have enough money for the 3.5% down, buy a place that you can live in and rent out spaces to other people. 

Personally, I would never live in PHX, but that is all personal biases (I prefer seasons and greenery), and clearly lots of people choose to live in PHX.At the end of the day, I would argue market selection almost only comes into play when you are talking assets that cater to institutional buyers that have to get investment committee sign off.