1) Since my designs are 50cm x 80cm to save money is it permitted to put both designs on a 100cm x 100cm board. Dirt cheap dirty boards sells that size for $25.00 for 10. Then when I get the boards I can just cut them apart.
2) I believe the standard is to make Gerber files and zip that all up into a single package.
3) I feel ok with the schematic/nets part of the project, but my concern is during the routing several traces go between pins, I am unsure if the parts I places leave enough space to hand solder the parts in without damaging the traces.
4) what size is recommended for mounting holes.
Looks like you could squeeze the components a lot closer together. Any reason they are spaced so far apart?