@Tommy Spijkers others have given you good advice, particularly in regards to the lack of management and vacancy numbers. The central question is one that I don't think has been asked: is this your pro forma, or the broker's pro forma? Rule #1 of Commercial and Multifamily Real Estate: Never, ever, ever, ever, EVER buy on the broker's pro forma. Because the broker's pro forma will be the rose-colored glasses, everything works great, best possible version of the numbers. Often, they're not attainable right out of the gate (if at all), because you can't just go in and raise rents on the long-term tenants, and even if you are legally able to, they may all move out once you do. And then, you may have to spend another $100K in upgrades to get it there. I would recommend modeling a 5-year hold, using the T12 numbers for expenses and gradual rent increases to market rents, and find out what it would take to get there from the market. Once you've done that, then see if it looks like a deal from there.
One other question: what's your goal with this deal? Are you looking to buy it for yourself as a buy-and-hold? Are you wanting to do it as a syndication? Or are you wanting to do the analysis and wholesale it?