1)Both, Some soft synths are a nice and easy way to make kicks/ other percussion, and bass sounds.
2)no live performances to much automaton going on.
3-5)My creations aren't on this level yet.
6)yes
7)ifs it to hard to remember I put it on paper
8)i don't know what exactly your asking here....
9-10)no
11)i try to mix everything down asap
12)no
13)midi man 4x4 usb input, works 99% of the time
14)I may have a melody in mind but I usually start from the kick >bass> mid/high freq pads, melodies.....
15)Only certain newer analog synths can such as the andromeda a6
16)First off make sure the tempos are similar. Are you using cdjs turntables, or software??