Anjou, I think that for you to get the best advice from this forum, it might be helpful if you talked a bit more about your sailing background. Certainly the possibility of the boat you buy becoming permanently attached to a dock becomes generally greater as the boat's displacement grows, but that risk also diminishes if you are an accomplished, fit sailor who has done some singlehanding before and you are willing to invest some time in learning to handle your boat well before venturing out too far.
Also, if you are not taller than 5'10" or so, most boats will not be a problem with regard to headroom.
What is your budget for this purchase and initial refit/fixup?
Finally, I'd recommend that you try to get a clear idea about how much you need in terms of acommodations. For example, if you expect to have frequent guests, that suggests two sleeping cabins as ideal, but one head should be sufficient. I think there are plenty of boats that fit that requirement, and IMO Beneteau has a great basic interior layout in their boats 30 feet and up. It features an aft head and an aft cabin as well as the standard v-berth and salon/galley. See this pic:
http://www.cruisersforum.com/gallery...searchid=48831