Buying Rental with Solo 401K money

[Ralph E Freeman]

I would like to purchase a rental property with the funds that I've already rolled into a self directed retirement account at Solera Bank.

What happens after I've paid for the property using my funds at Solera Bank, taken possession, found tenants, and started collecting rent? What forms or filings are needed each year at tax time to establish whether my investment has grown, or decreased in value (hopefully NOT the latter)

Lets say I deposit all the rent back into the Solera Bank account and and use that same account to pay for all the property maintenance expense. I assume the funds (profit) I've accumulated by years end would be the amount my investment has grown, assuming the market value of the property has remained constant. Does this sound about right? Or what if the property value has actually increased AND I've got rental income (profit after expenses) 

How would these two different types of growth be documented?