If possible your best option will probably be traditional financing as it is generally the cheapest and the least complicated.

It depends on what you want, if you want to be almost 100% independent and earn the max commission a cloud broker might be best if you need guidance and/ or leads and are willing to give on commission for it a more traditional option may be a better fit.

Since you have experience in the region, would you say that potential tenants seek out MFH (2/3/4-plex) rentals over traditional , largeapartment complexes or SFH rentals?

My question to you @Drew Eldridge and the others in medicine.... provided you have a large student loan debt (I do), financing makes me (and traditional lenders) nervous.

In order to do this, they drilled through the exterior vinyl, gypsum sheathing, etc of the house (considered a common element/ shared HOA item). 

I recommend you put in 5% and the seller take a carry back note and you secure long term fixed rate financing (traditional).

I just bought a property w/o a traditional lender for $2.15m  Put in $450k. 

I've read that financing can be difficult when attempting to finance a Condo w/ a traditional 30 year mortgage. 

The nature of all seller finance deals is the solution of the sellers problem in some way other than cash or traditional financing. 

Find a good inspector that is trusted by professionals in your area and get a good pulse on the effective life of your big ticket items (Roof, HVAC, HW heater, etc.) and calculate out how much each will cost to replace, then do the math backwards for what you need to put aside for CAPex and maintenance.