I don't know how strong you are, what your reactive abilities are etc... But VJB tells you which program you should do.

It doesn't really make a difference what hand you hold the weight in for calve raises. The weight is still being lifted with your leg.

GHR are better then leg curls. But you can do leg curls if you want to.

The 80% is out of your 1rm not your bodyweight.

I believe most if not all of your questions are answered in VJB and if not there then on Bagget's website. You should read it and try to find these answers for yourself.