Cash could definitely give you some bargaining power and speed up the process from accepted offer to keys in hand. Closing costs are higher for refinancing that they are for purchasing the home initially. You will also have to pay for all of the title work fees since whereas with a purchase loan the seller can cover some of the costs.
All is all, you should weigh out your initial bargaining power savings vs. the additional costs of refinancing and loss of interest, charges for pulling out the cash to purchase without financing. If you need help with financing, we're right here in Indiana would love the opportunity to assist you. You can learn more about us at http://the2mortgageguys.com