In reply to Jamieee1991:
If you get lucky with the weather and conditions (that’s a big if these days), there can be some good mixed in October and some routes will be logistically easier as you can walk off without too much snow in the way (eg big up and over routes) November conditions could be good as well I guess but the lifts are closed, the days are short and there will be enough snow up high to make it annoying but not enough for winter / spring style ski in ski out action. I’d opt for March if I were planning a first winter alpine trip as there would be enough snow for ski in/out (obviously ski touring would be an essential skill), there’s usually some mixed to be had and the days are longer and warmer.
The OP mentioned getting a guide, which suggests they aren’t particularly experienced and perhaps don’t realise that November really isn’t a great time to be doing Alpine routes, unless you’re a local with time to kill. I don’t know where the OP has much Alpine experience. If not, the summer is definitely a much better time to go. If they have some summer experience and want to get into winter alpine, March would be much better, or at least Jan / Feb once the lifts are open.