A/C for AIR Questions..??

ok am ready to do this,i have a few questions..

1.How hot does the output by the comp get's,?? can i use 1/2/ dot airline??

2.I can cut the lines without discharging it??

3.Pros and Cons, how long does this last,does the a/c burnout?, ??

4.Can i use my STOCK A/C switch to turn it on??

5.Pressure switch at tanks?? or at a/c??