Refinance Home Mortgage Interest Rate Resources

I am a new investor about to buy my first property. I never signed a contract with an agent, but have been working with one for several months. Seeing as he is a "buyers" agent I was under the impression that he would split commissions with the sellers agent at closing. I am going over the sales contract and he is asking for a commission of 3% of the sales price from the seller. This is the first time he has talked about a specific number he will charge. Does this sound right? This will ultimately effect what I am able to purchase the property for right? This is my first property and I want to be sure he is not taking advantage of me.
Thanks!

Iv'e been looking to buy a house or condo for myself to live in, and just started to entertain the idea of buying a multiple unit building instead. I would live in one unit and rent out the other 1 or 2 depending on size. But I've noticed in Chicago that rent is pretty low compared to mortgages, so I wouldn't have a positive cash flow if I live in one unit. I found a real nice two flat with a top floor rental and an owner duplex on bottom. I figuered out the numbers and basically I would just be saving a few hundred a month compared to buying a single unit for myself. Is it even woth it?

I am working on a deal to purchase my first 4-unit apartment building. I was under the impression that I could insure the property as an owner/occupant with a residential homeowner's policy. However, I learned on Friday that because I would hold the property in the name of an LLC instead of in my own name I would have to insure it under a commercial policy.

What do I look for in a good commercial policy? Are there any coverages that I should have or not have? Also, should I work with an independent agent/broker to shop for the best coverage deal or should I go with a specific insurance company?