Hi Ben
Mate the Alphas is regarded as one of the toughest low profile baitcasters ever made...do not be fooled by its size they are tough as nails. Might want to get a hold of a carbontex drag kit if you already haven't done so. This will give you more drag and improved smoothness throughout the range. Try to get it spooled with 30lb braid and you should be in business. Spending a few extra dollars to get a high quality braid with a thin diameter will see the alphas retaining a useable line capacity for this type of fishing. I used to use a sol baitcaster on local river and impoundment barra with upgraded drag and 30lb braid running as much drag as you can throw at it (when needed) and the little sucker didn't fail once.
Regards
Stu