Or should I grab plans from a local builder and work with their architect to modify the plans to more of my style?

Looked at HELOC on the rental, but is not allowed in Texas.Will probably apply for a 0% APR CC for a lot of expenses/material , but still need cash for labor/ vendors.Looked into personal loan , but 2 banks stated loan can not be used for investment property.

@Michelle Hardy recommend you compare projections for:1) Current rent-by-room2) LTR2) MTR4) STRRank them by revenue, expenses and how much time each will require from YOU.Find the balance that works for you!

Insurance is now a big factor in the expenses of investment properties, even here in Reno, NV there are areas that have had large increases for single and multifamily properties.

That being said it seems you are in the prime position to remove the largest variable expense from your equation. 

So many "investors" bury themselves in complex, expensive situations to protect themselves from some unknown threat to their non-existent business.Figure out if you have any shooting skills (or even enjoy the game) before spending money on $600 Nikes or an indoor basketball court. 

It’s usually best to open a separate business checking account so your rental income and expenses stay organized and away from personal funds.

Finally, any advises or tools on how to better manage the development process, track expenses and monitor budget?

According to him, some of the DST operators/brokers work together to sell off DST assets much sooner than planned.

I do get hesitation of investors to be frugal on pre-closing expenses, but it's almost always illogical.