You can be sponsored whether you are married or single, and that makes a difference as to when the visa number becomes available. It could take 9 years before USCIS informs you of visa availability. Here is the kicker, you are required to maintain a legal status in the US should you be here during the wait period, so that you can be eligible to apply for the green card. If you can't remain in a legal status in the US, then leave so that you can apply for green card when the visa number becomes available in 2019.