The field of publication has changed dramatically over the years and is still in an evolutionary stage. Understanding the elements of publication, the options available to you, and the terminology being used is essential to making the choice most appropriate to you as an author and to your manuscript.
Your manuscript is being professionally edited and proofread.
During this quiet time, start searching for agents and publishers who will accept "unsolicited submissions."
You've made all of the revisions, and you're very proud of your manuscript.
Start sending it to agents and publishers to gauge their interest.
Even if you want to become an indie author rather than a traditional author, there are advantages to making submissions to publishers and agents before embarking on the indie road.
Also read, How to Get Your Book Published (traditionally)
While you wait to hear back from the publishers and agents, keep working. Whether or not you choose to become an indie author or a traditional author, your manuscript will need other elements.
blurbs for the jacket cover (reviews)
marketing platform and/or branding
Start reading up on your publishing options.
When you have nothing left to do, WRITE. Use this time to work on other writing projects to build your portfolio.