My capital continues to be completely tied up in the property since I'm pretty maxed on my LTV and likely can't unlock any more equity with a HELOC or something like that.The goal of this project was always meant to be a short term exit so I could continue to try and aggressively grow my real estate portfolio, but now it feels like I'm stuck at first based.

You are out in Cali so it is tough to get a good cash flow deal but if you have a comfort level check out states Like Indiana, Ohio, Florida, Las Vegas, Tenn, Georgi and a few others.Unlike Cali you can still find a decent 2-4 unit in states Like IN, OH and FL for under $250K with rents at or above $1250 a door.

Focus on consistent action and saving aggressively.

It is a pretty amazing place, plus the lot looks decently sized.What I would do first is get with Amarillo College which is right there.

The duplex situation makes sense too: renting it out again short-term after the downstairs tenant leaves could bring in decent money, especially with the upstairs upgrades.

Some clients who are more aggressive will invest in B-/C+/C class areas in Dayton 1-4 units and get A LOT of cash flow, but incur risks of evictions, expensive turnover renovations, and general C class neighborhood headaches.What are you looking to achieve?

Does the property already have a decently sized master bedroom and master bathroom?

If you have a 20 year timeline, I'd probably recommend B areas closer to the city or in the better school districts in the suburbs for the highest combined ROI over that time period.Right now you can expect to find decently turnkey multis for about $60-$125k/unit usually all at least hitting the 1% rule in that range.

Aggressive growth versus wealth preservation. 

BiggerPockets has a decent system for finding a real estate broker in any given area.