As for capital, I will be utilizing my HELOC for initial fund on first deal.

After all PITI, utility, and services (lawncare and cleaning) costs I have $7,225.I set aside 25% of this for my maintenance fund.The remainder funds my lifestyle, wife has a Tesla, and quarterly vacations as well as business growth.In 2023 I am tracking to build 4 duplex units designed as room rentals funded in part from a recent land sale.

However, I’m unsure about the utility of having two paid-off rentals 25 years from now.

In addition to above, consider utility entrances.

I imagine a lot split would also significantly increase cost of utilities as now I would have 3 hookups in that scenario.I am also concerned what would happen to that sweet 3.25% 30 year fixed mortgage I have, which I don't want to create any risk over in the slightest.Any advice on how to frame my counter arguments would be incredibly appreciated.

Maybe they work for the fiber company and they want to put some kind of utility hub there.   

Thank you in advanceDepending on tree type might be able to trade or sell for the workCost for all utilities and street will vary depending on the type of road you will have inverted or crowned. - how many catch basins you will need, hydrants   - etc.Very important you must utilize both sides of the road to maximize your effective cost for the road and utilities when building.

Turn over cost when your tenants leave (check leases), marketing cost to add to the placement and monthly fees from PM, and utilities if those are provided by the landlord.What's your exit strategy?

I have an incentive of $25,000 for going with the builder-specific lender, and I'm trying to figure out the best way to utilize it.

From the homes we manage here in Central Florida any benefit of your utility bill is negated by the financing of the panels.