My husband and I want to put 6 (12 inch square) glass blocks along the top of a wall between two rooms to let sunlight from Room A into Room B (which has no windows). We want to space them about 8-10 inches apart. What would be the easiest way to do this? Cut and remove a long rectangle of drywall along the entire length and then build frames for each individual block?

Any tips would be appreciated!
Thanks.