Get started now
You can send the board back to the PCB manufacturer originally to
ask them to help you to do the drilling.
If you drill the holes by hand, the problem is that the drilling
holes won't be plated.
I've done it before, which is possible to do. But you need to use
a standing drill press.
For your case, drilling will be very difficult, even if you drill it successfully you will have to solder a wire through each via
on both sides.
I will keep on reading your sharing. Thats really interesting and helpful.
PCB Instant Quote