Initial cost solution:

typical glyph config, the puzzle is how to bond the product

using v-shape intermediate can get 2-atom on the desired inaccessible bonding position, and 1 grabbed atom which must be the quicksilver for projection

thus we must prevent leaving any singleton atom while crafting the v-shape

some paper work leads to a simple method, the snake-shaped intermediate which can be easily broken into 2 v-shape

implementing the process take almost no effort for its simplicity

swing footprint might have some room for optimization

Update 1: (-3A, -36C)
optimized the sequenced for a little bit, this must be very closed to optimal if not winning