You want lower land cost with high rental demand unless you're a reno expert and flipper which not 1% of real investors are. 

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

As inflation drives rent growth, properties in stable markets like the Midwest can continue to deliver returns even in higher-rate environments.Market Conditions Favor Real Estate RecoveryThe commercial real estate (CRE) market has faced significant challenges in recent years, but signs point to a recovery:Bottom of the Market Cycle: CRE appears to have reached its low point in late 2024, with 2025 marking the start of a slow recovery phase.Limited New Supply: High interest rates have curtailed new construction, which should drive rent growth in the coming years.Policy Changes on the Horizon: There is growing discussion about potential policy shifts under the new administration, including a return of 100% bonus depreciation and lower interest rates.

Detailed financial planning analysis can hone in on the actual number with a high degree of accuracy. 

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

Post Dodd Frank sellers have continued the same bad practice of selling houses to occupants with financing at selling prices that are way high, can't be justified via any type of 3rd party valuation (appraisal, zestimate, tax value, even recent sales in the same area).   

The percentages are going to be up to you There are all kinds of High interest account that require all kinds of hoops to keep them.

@Jacob W. land market in FL is highly competitive.

If you are in a state where eviction cost is high and it is tenant friendly you may need a higher credit score to offset default risk and eviction cost.If you are in a landlord friendly state where it is easier to get non paying tenants out you may be able to handle more none payment risk.  

From the sentiment of your post it seems like you're viewing the buyers as strictly investors when they may lean more towards traditional homeowners looking for a quality of life improvement or an improvement on their current financial situation today.Let's say the buyer pays 465k and has a 5% interest rate.