You need to balance the desires of the preferred equity with those of the common equity. 

I think they also need to be located in desirable, urban areas with strong rental demand, which can make finding tenants easier.

If possible and you so desire I would consider pulling out a portion of the equity to do another deal.

I have some experience buy and hold rental properties, and now I want to do flips, I need investors and I have some that have shown interest, in addition to speaking to private lenders that are willing to fund 70% of the LTV (based on the desired property)I'm seeing a lot of deals from wholesalers, but the problem is, some of them close in 2 weeks and some as long as a month, and they don't take conditional offers, and the good ones fly off the shelf really quick.My question is, how does someone like me close one of those deals within this short period, how do you arrange the equity and financing with little to no inspections sometimes even.I'd like to know how do I prepare myself to be able to close one of these good deals right away when they are offered to me and many others?

If it is in a desirable area, it will appreciate.

See the 2020 aerial view below.Very little undeveloped private land is left in the Las Vegas Valley, and desirable areas cost more than $1 million per acre.

For properties that size I'm not sure cap rates will give the best story, but for the sake of answering the question, cap rates are a level of desirability in that sub market. 

Please feel free to ask me any questions you might have if you ever find the desire to invest in that market area.

.- Mobile’s low cost of living and doing business provides a desired aspect to renters that can’t be achieved elsewhere, which provides a steady influx of renters thereby decreasing vacancy rates.

I would say the less desirable areas of Dallas county have a pretty nice ratio.