If do ourselves, wondering if a quality handyman, basic management software, and resources for an OH lease and tenant screening framework would be sufficient. 

Are you seeing enough quality deals to even need more capital?

And while nothing is foolproof the most consistent method of finding good vendors is relying on OTHER real estate investors that have worked with those vendors.

Looking to use hard money loans to purchase properties,  using the fix and  flip method for the 1st few properties to build cash reserves. 

If you have investor money in the deals and you want higher quality reporting, then Yardi or RealPage are good choices. 

Are there methods I could implement to help close on someone interested in my property faster?

Many investors who started out with construction skills started the DIY method.

If the comps are off or you're looking at active listings it can throw your whole strategy off-DOM is up: Seasonality and this rough winter we're having are adding to increased DOMs in areas that are price sensitive many tenants cant afford the current rent rates due to inflation job loss etc so many tenants are staying put -Revisit your marketing, do you have high quality photos?

@Sara Joe  I use over 20 different acquisition methods including foreclosures, off market, probate, tax sales, and other problem properties like title issues or physical issues like fire, smoke, ice, and water damaged. 

Location and the quality of the asset is the most important thing.