Without having a clue what field you plan to pursue, will faculty be able, if needed, to advocate for you to peers in their field? Will they know you well enough? Will you have worked/done research with the faculty in our undergrad? IMO, this, (plus GRE scores and whatever else your target field requires) are things to think about— not how long you spent in undergrad. If you meet the graduation requirements and had have solid coursework in your planned grad program, these are likely more important.