I would suggest putting your site to bed (finishing) entirely
first.....the size of your account will more than accomodate anything you've put there.
Then, when you've gained a bit more expertise and comfortability using BV and all, you can afford the time and patience to methodically go through your account to clean it up!
PS: Part of the details I mention in planning a website include properly Naming/Titling images (not only so you can recognize them) as part of designing true "relevance" throughout, for greater SE optimization: established relevance between Key Words, Meta Tags, Page Description, Content (written, links, headlines, etc.), and even Images. For example, in a "Computer" section, on a page devoted to IBM computers, having the image Titled "IBM Model 1234" placed near Textual Content describing "IBM Computers, Model 1234" certainly demonstrates not only organizational relevance on your part, but also to the Search Engines as they try to evaluate your construct.