Lower Offer Directly to Listing Agent?

[Account Closed]

I've been working with an agent and viewing a few good properties, but nothing great. I'm viewing a property that I'm hopeful about this weekend. It would be purchased with a conventional loan if the numbers work out and an offer was accepted. 

There are two other properties that are of a much lower level (needs more work) that I may be interested in. I would pay cash for these properties and probably low-ball offers. One is Fannie Mae (B neighborhood) and the other is in a C neighborhood.

I haven't yet mentioned these two properties to my agent - I did find them on my own. Should I contact the listing agents directly since I'd be making a much lower offer and would like the best possible chance at getting the offers accepted - meaning the listing agent would get the full commission (instead of splitting it with a buyer's agent)?

Just getting started, so I appreciate any thoughts, ideas, suggestions...