Excellent!They will be removed and the ceiling will remain open.
But remember the height of the gap vertically is what you measure.I believe soffit is about 6"-8" wide. That should put me at around 30 sq feet of ventilation if I am calculating that correctly.
Have made that miscalculation myself.
I was thinking it looks like a house... so, yes, good practice!have enjoyed the process so much that we are now talking about building our own house as a ten-year goal