number 1: there is a partitioner included called gparted which should allow you to increase the size of the partition. i recommend you burn it on to its own live cd as u dont wanna use a drive while its repartitioning.
number 2: this is not a windows forum. please next time address that issue to a windows dedicated forum. how ever, try this. first leave ur hdd in and log into windows. remove ur removable hdd and run fixmbr in windows. that should do the trick, i might be completley wrong on this though.
number 3: no idea. sorry
number 4: try to wait a bit between the deauths, for some reason it screws up for me too when i try and deauth too many times one after the other.
number 5: refer to this as this will give u a fundamental understand of what selecting the hosts actually does. this will in turn answer ur question
number 6: no idea, never happened to me.
number 7: no idea. sorry
and yea well written post. i like how u highlighted the questions. hope i helped.