Making the beefy 5-layer burrito vegetarian — swap beef for refried beans or add extra refried beans?

I’m trying to convert to full-time vegetarianism, so TB has become my go-to fast food spot since it’s so vegetarian-friendly. One of my staples has always been the beefy 5-layer burrito, and it seems fairly easy to make meatless.

My question: would swapping the ground beef for refried beans on the app give me a double portion of beans (I’m trying to keep my protein intake high) or should I remove the ground beef entirely and add “extra” refried beans for an upcharge? I’m trying to avoid paying full price for a half-empty burrito.