Absolutely you can. Your agent should welcome this additional help. However, make sure you are prepared. Safety is important when holding an open house. Put away valuables. Keep good records of who enters your house, when they enter and what they look like, even their license plate numbers if you can see them. Get their contact information so your agent can follow up.
Have your agent provide you with some forms, flyers, business cards, etc.... more
An "as is" property is not going to naturally fetch a better price by waiting a few months. Since you inherited the property and you don't have cash to restore the home to fair market value, I'd suggest you sell it right now as is. Get what money you can as soon as possible and move on. Restoring a home isn't a guarantee that you'll get back what you put into it. Much of the time you don't. Don't believe everything you see on real estate "flip" TV.... more