For a psychological abstract, how long is too long?

I’m finishing up a research paper for my Psychopathology class, which is particularly focused on addiction and dependence, encompassing both substance addiction/use/abuse/dependence and behavioral addictions.

The paper is partially:
– a review of some of the literature on sexual addiction
– a critical analysis of sexual addiction in the context of American mainstream culture
– a discussion of the potential inclusion of a diagnosis of either sexual addiction or hypersexuality in the DSM-V, which is frequently being revised as it draws closer and closer to its publication date
– an introduction to and explanation of my own ideas about the benefits of working to incorporate attitudes that are more sex-positive when considering the varied sexual interests, in type/frequency/degree of intensity/choice of partner/etc., of an individual to alleviate the stress and anxiety the comes with socially-induced sexual shame and the stigma associated with sex drives on both frequency extremes (hyper- and hyposexuality); essentially, working to change cultural attitudes regarding sexual preferences of all varieties would draw the focus away from pathologizing behaviors that are not necessarily inherently distressing or maladaptive (I could go on, but I’m afraid I’ll just end up starting to rewrite my essay and be unable to stop myself…)

I know I’m addressing a decently large number of topics, as well as an array of concepts that need to all be threaded together and connected. I’m very interested in these issues, and I have both strong opinions I want to share and a wealth of evidence to support it, but that’s precisely my dilemma. I’m trying to communicate so much that I think my abstract may have gotten out of hand. I know psychological abstracts are typically in the basic range of 150 words, but mine has been difficult to edit down to a whopping 216 words. Is that too long for an abstract? How strictly should one follow guidelines like that in APA formatted psychological papers?

I touch on each of the topics I listed very briefly in the abstract I have now. If you think it is too long, what would you consider to be essential to the understanding of the paper, and what could be trimmed without then missing an integral piece of information?

For reference, the full paper will be 20+ pages, including a works cited page.