On your 32 the minimum I'd recommend is a Harken Midrange traveler. Jackdaw has you covered on some of the pitfalls you must account for in placement.
From pictures, I can assume your only viable option for cockpit traveler is right behind the companionway. The deck shape there looks like it might already have a location available for such a configuration?
I really like the configuration in this picture this allows a mainsheet trimmer (assuming its not solo sailed) the ability to sit on the high side and dump the traveler easily, and work it back up again. 2:1 isn't going to cut it, you'll likely want 4:1, picture looks like it shows 3:1