It sounds like you have a good base for your hiking guide training goals. The main thing you need to concentrate on is increasing your weekly volume and vertical over the next 8-9 months. I’d recommend doing 3 weeks of building the work load then take a recovery week where you drop the workload by 50% for that week then start building again each 4 week cycle like this. Doing this in winter on skis will be a great way to build both strength and endurance for these longer hikes when the spring comes. On days when you do not have so much time for big hikes or ski tours I recommend runs because runs compress the training into a shorter period. The transfer of the training effect from running to hiking is very high so you will get to be a much stronger hiker from running. in the summer you can do specific steep muscular endurance workouts that will really make your uphill hiking much stronger.
I hope this helps. Good luck with your goal.