The properties I am targeting are thought of for infill development first, but when those numbers don't work rehab second.

Targeted Facebook ads or Google Ads will speak to your ideal tenants.Incentivize Referrals: If you don’t already, consider offering your current tenants a small reward for referring someone who fills a vacancy.

Whether you’re targeting strong cash flow or long-term appreciation, understanding the dynamics of each neighborhood is key.

Do you have a/some target area(s) in mind yet?

Now consider this: all the groups people are spending fortunes to target—foreclosures, absentee owners, probate leads, tax liens—what do they have in common?

Since you’re already networking and have some good realtor contacts, focus on narrowing down your investment strategy (like buy-and-hold or house hacking) and target markets with solid cash flow potential.

My wife and I have overhauled our personal budget to reflect the 'pay yourself first' approach (allocate in order: income comes in -> invest -> donate -> fixed expenses -> variable expenses -> fun $$).We are looking to see what experienced people generally recommend for a holding tank for that 'invest' allocation while we target our first real estate deal.What financial vehicles have you guys used that works well for this?

How do you determine a reasonable target return?

Go to their "contact us" page and find the representative in your target market. 

From a personal standpoint I target 70% LTV for any investment I have that way gives me ability to sell it if I need too