@Nick Vought if you currently have limited equity, have $1,200/mo. cashflow, and have three more units that need to be updated, consider:What is your investment objective?

As an affiliate, your main objective is to sell the products and services offered by your partner merchants.

@Josh Richter as others have said, you'll want to set your criteria first based on your objectives.

You seem to be more experienced than me as a developer/PM, but first thing is always to take quantities, if your designs are so preliminary that quantities may change drastically and you're worried about going over-budget you should probably simplify/scale down your design.

Once you establish what your business model is then following that and avoiding shiny objects is  your one thing.

Many who fail do so because the chase the shiny object.

@Brooke Contreras start by clearly defining what your objectives and goals are which will then lead you to the best strategy and market.

@David Corboy, if you can generate sufficient net positive cash flow that funds your maintenance reserve and puts some money in the bank and you get 6% annual appreciation, will that meet your financial planning objectives?

Adding these vents in correct quantity and spacing as per current code requirement should solve the problem, so I wouldn’t be overly concerned about it.

What are your goals and objectives?