As Leona said, a box color may not lift your hair color enough to the desired result. Either bleach or a high lift box color (light brown/blonde, preferably) will get you there. Loreal Hi Lift hair colors can achieve that for you (I believe it's sold at Sally's). Also, unless you want really red hair, I wouldn't even recommend getting a red color... The way that hair color lifts is black/dark brown to red to orange to yellow to light yellow/gold/platinum. You don't need a red color and Kerri's color isn't that red; when your hair color lightens, there will already be red base tones visible (which is why many people tone their color after lightening it to get it exactly the way they like). So like I said, a light (neutral) brown or (neutral) brown would be sufficient. I think the Loreal Hi Colors have a toner/color built in to get your hair to that color as it lightens, so you will have one less job to do when it comes to toning the hair.
ETA: Your hair is gorgeous though, so unless it's very healthy and strong and you're very confident in attempting to do this ( I wouldn't say it's hard persay, you just have to really understand the laws of hair color) I'd advise you see a colorist.