Others may have a different opinion, but outside of a seller carry back up to 90% CLTV (still require some skin in the game, unless you go true hard money) 2nd liens on real estate for purchase transactions in the manner you're seeking are very difficult to get a loan against, whether it be a secondary market lender (private equity fund, balance sheet lender, family office, etc), and usually are seeking larger transcations ($1-3MM +) in this space, and are still capped at a max 75-80% CLTV (still wanting skin in the game).# 4 usually requires more explanation as its newer to the market (DM me if interested in discussing these options further), but all 1-4 appear to be potential options for you based on the limited details. 

As long as your comfortable with your numbers and the sustainability of your cash flow there's nothing wrong with higher equity to get that cash flow.Or the other way with 2 smaller properties like @Peter Mckernan said.That's the beauty of the 1031. 

We have been blessed to serve a a ton of Bigger Pockets clients and the biggest challenge we have with house hackers is the FHA Self Sustainability test.. 75% of the overall rent has to cover the PITI.. with rates where they are this has been a big challenge. 

You all pointed out the flaws with our plan in a very constructive manner.

The point is to get educated and try to limit your risk in an intelligent well planned manner. 

Any advice on building a sustainable budget would be appreciated!

Certainly trying to build something sustainable! 

A dedicated team shares a common vision, working together to achieve sustainable success and maximize returns over time.👥 Networking & Relationships: Building relationships is crucial in real estate.

If I recall, the investor had a high-paying W2 job, lived very modestly, and put a lot of her disposable income into buying and renovating properties for a sustained amount of time.

Firstly, various government policies and programs aimed at promoting homeownership can sustain or increase these rates, even amidst rising prices and interest rates.