Update:

1) Marking the openings on the bulkheads - Showing progress with #5 bulkhead here
(Shadded the area to show what will be removed)

2) Drilled the starting point for the scroll saw...

3) Didnt cut out the cross hatch since will be using Jig to assemble the hull, marked the cross hatch with dashed line for me to hand cut out the hatch after the hull is sheeted and safe to remove from the jig. (Note: extended the cut outside the opening up to the dash line - circled area as shown in the last picture)