If you have that much equity, perhaps a $1.5-$2M would make sense, but I assume that would be a larger property with more doors.

So this is a tricky thing.Accountant's / CPA / Professionals who get paid based on their knowledge and time normally do provide a 'free consulting' call to have a chat with them.However, please be mindful that the 'free consulting' most firms offer is very high level and moreso to see if you both would be a good fit for eachother.Sometimes, these calls are done by the owner(if its a smaller firm) or business development  professionals if the firm is larger.1800-Accountants is a large firm so you are likely first vetted by a non accountant whose main job is to get the sale.Best of luck.

Ohio and Pennsylvania have lots of older small multifamily that I do think is very suitable to house hack - sometimes you can buy a place with a studio or 1 BR that also has a 3 BR or a 4 BR, you live in the smaller unit and you rent out the larger unit. 

That said, if the property you're attempting to finance is materially larger than the properties you currently operate (IE - you're trying to finance a 30 unit building, but have only operated a series of 4-plexes to date), then sometimes this rule gets thrown out the window and you'll still be subject to the "Limited Multifamily Experience Sponsor" re-sizing parameters. 

Then your choices sound more foolish than unfair.

Built in 1890, this Old Victorian was converted into a duplex in the 70's by a talented architect who made some unique and extraordinary custom design choices (read Vaulted Sunlights) that make this property truly one of a kind.

One unit has tenants I would like to keep (it is much larger and draws much better rents).

But he does not have a choice to stay and not renew (as long as you enforce that).  

Additionally, how do I find a realtor that deals with larger multifamilies? 

To answer your question about the 203k, yes this property would qualify in this scenario as long as the residential portion of the property is larger (51% or more) than the commercial space.