I voted "no, for both of the above"
The body gets immune to juice, just as it does to any drug. It is like drinking, sure people that can take 20 shots a night no prob look manly, but they are also spending a lot more money and doing a lot more damage to themselves then the 2 shot wonder.
Also, on a first cycle you don't know how you react to drugs. It would be better to have a mild reaction off 500 mg of test, then a very strong reaction with a gram of test.