@Alex Sarnoff I like what Evan and Henry have already shared. Going from MFH to NNN retail or industrial, you are trading one set of issues for another, though presumably easier issues. MFH carries all of the emotional issues and local governance that tends to favor tenants over landlords because you're dealing with "people's homes", not an investment property. From a management position, Evan is correct in that most issues are dealt with on a business hours timeframe vs. 24-7 for anything residential in nature. If you intend to self-manage, you will appreciate this difference long-term.
For the rest of your question, as Henry already stated, don't trust someone else's numbers. Perform your own investigation and build your own rent roll/spreadsheets to confirm everything. Draw your information straight from the leases on a tenant-by-tenant basis. Work hand-in-hand with your broker and leasing agent to confirm what market rates are doing compared to what is being paid currently. It's easy to say you'll raise rents to market rate but pulling that off can be difficult in softer markets with supply/demand dynamics without causing temporary vacancies, which leads to new TI's and other lease incentives to refill the space.
I'm sure you have an investment strategy for the replacement property, and that should include which markets you are looking to reinvest in. That is perhaps the most important question if you're considering multi-tenant NNN retail like a strip mall instead of single-tenant net lease deals. Based on your purchase price I would assume the latter. In theory, you should only be considering the strongest of markets, buildings in the best locations, with high demand and high barrier to entry for new retail developments. Where do the people (and business by default) want and need to be? Buy there, even if lower cap rates. A strong location with solid tenant mix, with strong market dynamics will trump a higher cap rate opportunity in a secondary market over the long-run 100% of the time. One vacancy in a lower tier market, could take 1+ years to fill, compared to a prime retail location that has a tenant waiting list just hoping a vacancy appears at a center. More demand equals less TI, rent abatement, or other LL concessions to provide when a vacancy does occur, so select accordingly. Your overall return on a 10-20 hold period will show the merits of this approach.