If you just converted, the timing seems about right for a Meeting of Creditors. This hearing has nothing to do with the ability to sell an asset. You also mentioned your "Chapter 7 judge." The judge would be the same for the entire case. However, the trustee would be different. The trustee is in charge of your bankruptcy estate.
You also mentioned that you were not told that the land would be considered an asset. Was the land listed in your petition? If not, then the filing could be considered fraudulent for failure to list all assets. In addition, there would be no way to protect an unlisted asset. If the asset was listed, then the next question is what exemptions were used and how much was protected. Look at your Schedules A&C for the answers to those questions.
You may be able to buy the property back from the trustee. Have your attorney contact the trustee and see what he would be willing to take (sale back to you avoids having to pay someone to sell it so it may be a win-win situation for everyone if you can afford it).
[This communication is intended as general information and not specific legal advice, and this communication does not create an attorney-client relationship.]
When you wrote "our hearing for 7 is in 3 wks," what did you mean? Are you referring to the Meeting of Creditors? If not, then I do not know what kind of a hearing you have coming up in 3 weeks.
Anyway, the filing of a Chapter 7 petition creates a "bankruptcy estate." The Chapter 7 Trustee is the person in charge of the 'bankruptcy estate.' If you have an asset that you can't exempt, then the trustee can sell it.
So if you're in Chapter 7 right now, with no exemptions available to protect your land, then the trustee can sell your land. You will need to find another attorney if your current attorney isn't helping you.
The previous answer was sound and I agree. When you say that "we were not told that our land would be considered an asset", this is not consistent with the disclosures that all bankruptcy attorneys are required to give to clients and to have the clients read and sign. Most of my clients come to me after having done at least some basic research, so the disclosures formalize basic concepts such as the fact that in a chapter 7 all assets are part of the bankruptcy estate and you will emerge unscathed as long as all unencumbered assets are covered by available exemptions.
The Nolo publishing company has some excellent books on bankruptcy. (No relationship with them no money goes into my pocket, it's just that they are good books.) And, yes, if you feel that you have not been properly advised in the process, seek new representation. The National Association of Consumer Bankruptcy Attorneys (NACBA) has a website with localized information on attorneys.
This answer is provided for informational purposes only. Actual legal advice can only be provided in an office consultation by an attorney licensed in your jurisdiction, with experience in the area of law in which your concern lies.