I bought a cruising spinnaker for my Beneteau 311, because with my standard 116% jib I needed more power in light wind. I really like it. For those into details, it's cut as an A1.5, which is a reaching sail that will go a little more downwind than an A1, and is a little sturdier than an A1 (see my avatar picture to the left). For the tack, I run a line thru a block on the end of the bow fitting, attached to the tack of course, and back to a cabin top winch. When sailing off the wind, like at 120-135 deg apparent or more, I loosen the tack line as much as a couple feet and let the luff rotate around the forestay so that it comes out behind the main somewhat. With some uncertainty about whether your proposed used sail is a little short, I suggest a similar line so that you can set the tack height at whatever is needed (as long as the sail is not oversized). When heading up to a reach, or above, I tighten the tack line to pull the luff tight to make the sail more genoa-like. In light winds I can sail well above 90 deg apparent.
I don't mess with a snuffer or furler. I find it more trouble than it's worth, although on a bigger boat like yours I might feel differently. I usually handle the spinnaker double or singlehanded. Since my sail is for lighter winds, I have taken the spinnaker down by the time the wind is strong enough to be a problem (so far). To douse the sail, I recommend heading off the wind, say 165 apparent, so that the spinnaker is largely blanketed behind the main. I drop the halyard a foot, then ease the guy/tack line all the way, pull in the lazy sheet, and then pull everything into the companionway as the halyard is eased. I've used this same technique on others' more serious racing boats when sailing into a thunderstorm shorthanded with the spinnaker up (racing and good sense are sometimes not fully compatible for some skippers) and things start letting go.
I apologize if you are familiar with these sail handling details, but I have had good luck with this shorthanded method without a furler or snuffer.