You sell at $300K; less $207,500 + 8% selling fees ($24K) = $231,500.

@Abiy Tedla I have mostly gone with white cabinets with black hardware on the same as is the market trend currentlyPersonally, I'm a fan of staining cabinets more so than painting since it lasts a lot longer and is more durable (plus I think it looks nicer than painted cabinets too) Additionally, using stainless steel appliances and under-mount sinks definitely adds to the oomph factor of the property even though they aren't much more expensive than their counterparts

Just put down the interest earned and any fees you made as well. 

Note that conventional loans allow 5% down for multi-families now...It sounds like even with your father's help, you still don't have sufficient funds, much less also having additional reserves...What, may I ask, is your job? 

I can ask for a "final bill" to be generated. there is a fee of $75 to generate that and I don't know if I can pass it along to the tenant.

Additionally, not everyone is borrowing from a commercial bank.

In addition, if a property owner decides to replace a carport or driveway with an ADU, they would not be required to replace that parking."

In addition to the other replies, if you are on septic I would not install one.  

Do you have enough money left over from your home sale to finance the 4plex as an investment property (additional 10-15% downpayment.) and then still have enough left over for a downpayment on a new home?

You can redeem the ground rent, buy back the land, for a small fee at closing.