Converting or Re-writing VB6 desktop software to VB.NET

Our company has been building a piece of software in vb6 for over almost a year now (117,000-140,000 lines of code) During that time, we thought that migrating vb6 to vb.net would be a simple process, but unfortunately we have learned otherwise. Since learning this, we have been investigating our options. The two major companies that specialize in migrating are Artinsoft ($8000 USD) and VB Migration Partners ($6,200 USD). For more options, we would like a development team to bid on **recreating the software from scratch or migrating** into vb.net. Again, it's somewhere between 117,000 - 141,000 lines of code. It has 155 forms. We will provide complete documentation and database structure. The documentation will be very detailed. Also the db will be SQL Server. Each bid should be made with a deadline. I will be responsive and answer as many questions as I can. Thanks