+1 for the above. Kanadias are fine if it's not too muddy and steep, otherwise you may need to think about more "aggressive" options. Patrick seems to have some inside information on your course, this is definitely worth its weight in gold. He runs for a full on fell club as opposed to a dabbler like me so his advice on grippy shoes is worth taking.
I know money is an issue for many (including me), and in fairness I've run fell and XC in my Kanadias in summer / early autumn and they were great. My only advice is try to get the Kanadia 4s as opposed to the Kanadia 5s - they are much more aggressively soled and would be a much better option in bad conditions. For what it's worth, I can't fault my Walshes so far, they have done everything asked of them. Not tried Inov-8 yet but want to, at the last race I did they outnumbered Walshes by at least 10-1.