First off, hello.
Since you're married, you'll need to apply for your spousal visa, then. When do you anticipate applying? There are a lot of changes expected as of April 2012 such as extending the length of time for ILR eligibility and the abolishment of ILE jus to name a few. I'm about to go through the process of the spousal visa come March (fingers crossed). There is a LOT of information in the threads of the Visa & Immigration section of the forum and a lot of very knowledgable people who have already gone through the process.
As for US citizenshiop, it's definitely more of a benefit to have his done and dusted. You never know what you may decide in the future, but that way, you're covered immigration wise on this end. DH just did this and it does only take a few months after applying.