Possum

I am a junior biology major (chemistry minor) who has recently become interested in SLP as a career. I have read that it is possible to pursue SLP without a CSD undergrad, but how much will this affect my chances? There are two schools in my region that have extended 3-year master's programs for non CSD majors, but I can't find any information about how competitive they are/how many students they take a year/etc. Other than shadowing in the field, is there anything I can do to increase my chances of acceptance? How do admissions committees generally feel about people with a non CSD undergrad degree?