If you do not have an airline, use your footpump (assuming you've got one) with the plastic adapter that these often come with.
Do not attempt to split the caliper into two halves, the bolts must not be undone (unless in a factory) as the caliper may leak if not exactly right.
With regard to the brake fluid, I believe the fluid is too coarse to use and I think it is the servo manufacturer who does not recommend its use.
If you are doing one side you should also do the other, it will probably be in a similar condition and you do not want uneven braking!
Good luck
Gary