8mm Synthetic rope is way to small. I would buy 10mm synthetic rope off eBay for you 9.5 every day. 30m is plenty! Too much even. For safety's sake every day a synthetic rope is easier to use.

You might consider a synthetic rope and a hitch receiver mount and you could use the 9.5 as a rear re moveable winch for the win. The synthetic rope will keep the weight down allot so easier to carry around.

My 2c