Install the latest clover 2953 on to the usb after the install usb has been made.Sometimes that helps.
try to use the default config.plist that clover generate and then at clover gui press 'O" to open options and in the config options enter
-v kext-dev-mode=1 slide=0 darkwake=10
in binaries patching select lapic fix
and try again.
Is your dsdt patched and correctly placed,what is shown at verbose screen?
Edit :look for files in yehia's post and choose the ones that work for dv8 or corresponding ones that have worked for you.
Look @ this thread
for booting once you have made the install usb or make a fresh usb install with the script given in that thread and try.
Will be out of town for a week, so no net access, hope you are able to get it going.
If all fails you can try with chameleon .