I have one for mine, but went with a 180% with big shoulders because I wanted a good runner. In hindsight, I would not do that again, but would probably go with about a 165%.
One thing you might look at before ordering a sail is how your spin halyard will interact with your jib furler. The sheeve for the halyard is really close to the forestay attachment, and I found that there would be a really tight "fit" between the furler swivel/preventer and the spin head/shackle when hoisted. So, I did something different.
I run my halyard to the masthead sheeve and then bring it down the front of the mast to a halyard diverter installed at the black band.
This picture shows the spin halyard at the "factory" sheeve:
The red line is the spin halyard and you can see how snug it is to the forstay and furler swivel and preventer.
Originally I wanted to simply fly it from the mast head (after checking with Beneteau and the mast manufacturer to make sure the mast could handle the loads), but got concerned with halyard chafe since the sheeves have hard castings around them that could cut into the line. To avoid that, I installed the diverter at the black band. The halyard exits at the mast head and then runs down the front of the mast to the diverter. The spin is hoisted to the diverter.
This picture shows the mast head sheeves and the reason for the chafe concerns:
The diverter looks something like this:
It has worked out very well. The spin is larger than standard due to its longer ISP measurement of 40' 10" instead of 37'. The only thing I would do different is go with a 165% or so to have a spin that is more versatile. The 180% is not very good for reaching.
One caveat, if you have a furling mast, this will not likely work for you.