In reply to Pesda potato:
>"arent sure whether to get a guide or not"
In view of your limited general experience, absence of specific knowledge of the route, size of group, and the vagaries of the weather, I'd say your chances of a successful single day push, unguided, are pretty low. Guided, your chances will increase considerably but even then you still need to be lucky with the weather.
I sort of agree with the guys who say, take more time.
I suppose depends on how much time you are willing to spend on the project.
If you were there for the week, then you could recky sections, install water/food dumps and have a few days weather wise to pick from, for the actual push.
If you only have time to be on Skye for a few days, then I'd suggest you set out expecting to take two full days with a bivi.
To give you an idea, I took a day and a half (29 hrs inc bivi, glen brittle to slig), in perfect weather, with lots of climbing/scrambling experience behind me, and having previously done what must add up to about 70% of the ridge, while ticking all it's munros and most of the technical sections.
Though expect your hill running might be more advantageous than my sport climbing, fitness wise.
As others have said, route finding is more of an issue than navigation, particularly if you are tooled up with GPS.
Post edited at 14:25