There are a lot of factors when considering which year to apply to (and without knowing more about your background it is difficult to give a yes/no answer.) However, 45 months of experience will not raise any flags. Business schools vary on the number of years of work experience that they look for, but they like to see at least 2 years. This is 2 years of post-graduate work experience (internships during school are typically not considered.)
Hope this was of help.
Conrad and the Stacy Blackman
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