If your team hurried through the requirements phase and didn’t do a very thorough job of data collection and reconciliation, they will mostly likely be barraged by questions from the service providers after they read the RFP, and you should expect to spend considerable time reissuing clarifications, corrections and updates. You may also find that the service providers are forced to make assumptions, due to lack of information or conflicting information. When this happens, each service provider will make its own set of assumptions, making it difficult to review and compare the proposals.
Unless adequate time and care is spent matching the business strategy and sourcing requirements and getting approval and support from the executive team, your team may face changing requirements, unclear communications and confusion on both the provider and company side. This makes for a very difficult evaluation period -- the teams are unclear what they are trying to achieve, proposals miss the mark, and frustration abounds on all sides.
If you choose to instead do a good job of defining your objectives and required outcomes, along with a thorough set of outsourcing requirements, you will have a much better chance of getting what you want, and avoiding contracting nightmares, escalating costs and "do-overs".