Model: Xperia Arc S
Kernel: Doomkernel V22
For me xLOUD seems to work great!
My settings in SetCPU are:
I/O sheduler: deadline
I installed some apps and I have atleast 170mb ram...
The rom is fast and sexy
but i miss the music widget and the great equalizer so i will install a mod
About the battery...I don´t know
but seems to be good too ;D
So you did a pretty good job