I wont be of any value to you as far as a good resistance value.
My method is to check for spark. If none I just check to see if
the secondary is open. If I get any resistance I move on.
Just an explanation, not a recommendation.
There is a gap setting for the points but it is difficult to do
as the hole isn’t in a convenient location.
You should find a mark on the mag plate and the flywheel.
This is where the points should be set to open.
Cant tell how your spark plug wire connection is made to the coil.
They don’t look to be soldered on.
I insert a brass nail in the end of the end of the wire. My thinking
is this should make better contact than just some extra wire sticking out.
Four information the original wires have been replaced on your motor.
Originally the connection was sealed in tar.
In the tar were two very fine springs making the connection from the
wire to the coil.
Tubs
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.