definitely didn't think about any of this so i was glad i came to seek advice from experts.

My Realtor seems to think the price is justified by sending me three homes active listings as “comps”- one in another town 220 sqft bigger), one legitimate 3 bedroom with a half acre of land and a garage (vs 0.1 acres no garage and no off street parking), and one (have to chuckle) a brand new home essentially- completely 100% renovated inside and out, 150 sqft bigger all new systems. 

There is also a group that does meet on I think the 1st Saturdays of the month in the Northland in Parkville. 

That metric is a little dated, but I think you can adjust it to 15%.

There are a few options(1)You can get connected with the larger wholesaler firms in the area (2) go through PCPAO site and skiptrace the buyers of similar properties as yours, (3) hunt down the agents involved in the sale of properties similar to yours or go to local REI meetings and pitch it to the investors there. 

Similarly, if you put several Class D tenants in a Class A 4-plex, what do you think will happen to the property?

You pay your agent at closing (think of it as an additional closing cost) Depending of the situation and of these options can be used by you and your agent to negotiate with the seller.

I think that's the problem...

Like others, I don't think I am following what you are trying to accomplish and how partnering would further it. 

Just some things to think about.