@Sonny2004 I'm not an REI employee but I am 5'6" and I've been hiking with poles for over 30 years. I set my poles to 110-120cm when hiking on relatively flat terrain, shortening them on steep uphill sections and lengthening them on steep downhill sections.
Most hiking poles are adjustable. (Some Black Diamond Z-poles aren't.) So basically any adult hiking pole will do. Aluminum is heavier but more durable than carbon fiber. Also make sure the grips are comfortable. I like softer like cork or foam but some prefer harder plastic.
Stick (no pun intended) with name brands like Leki, BD, Komperdell or REI house brand and you won't go wrong.
Enjoy your pilgrimage and stay safe.
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