i just moved last month form logic 7 to logic 8...... still running "old" powermac G5 and powerbook G4

i was never really worked on it before,but i knew when i'll move to 8 it will be different way of working.
so now,after month or so of working with logic 8 i have few problems.....
since im working with two 19" screens - one for the arrange window,and one for the mixer\piano roll\plugs, i found out that logic 8 is build for one big screen\laptops, and not for dual screen working area (for shore not two small one's like i got....).
first what really disturbing me and effecting my working flow is when im pressing (double click with the mouse) on audio\midi region in the arrange window - its open the piano roll\sample editor at the bottom and not in separate window like it was in logic 7!
im shore its nice when you working with one big screen - but for this i've got 2....
i change the the key shortcut for this - now its open the piano roll in separate window, but how can i change the double click as well????
second im losing space in the arrange window coz of all the extra buttons (up and down),the extra channel on the left(i dont need to see the output channel...),the big transport at the bottom (in logic 7 you had an option for a small one on the up left corner) - i know i can make them smaller and to close the transport\channels on the left,but even if im doing so,i still had more space in logic 7!
i had more things that disturbing me,but i cant remember now.....
so i hope that one of the expert here can help me to solve my problems of moving up to logic 8.....