With the small number of troops involved, the varied units and differing equipment, this may well be a suitable engagement to use Too Fat Lardies' Sharp Practice. Another popular ruleset for the colonial era, The Men Who Would Be Kings would also be reasonably well suited.

In the board wargame space The Last Invasion: The Fenian Raids on Canada - 1866 & 1870, an upcoming title by Mark Woloshen and published by Legion Wargames, covers the Battle of Ridgeway.

While I have focussed on the Battle of Ridgeway, the Battle of Fort Erie, with a small force of Canadians unprepared to meet the oncoming tide of Fenians retreating from Ridgeway, offers an interesting asymmetrical attacker/defender scenario run against the clock.