Just saw this thread.

I did something similar for bootmenu.sh. I modified the boot_message() to something like:

boot_message(){
${T2S} -c
${T2S} -s 1 -H center -y 20 -T 0 -t "Booting from ${default_root} (${root_dev} ${root_fstype})..."
${T2S} -s 1 -H center -y 392 -T 0 -t "this N800 belongs to"
${T2S} -s 2 -H center -y 405 -T 0 -t "xxx@gmail.com"
${T2S} -s 2 -H center -y 425 -T 0 -t "408 xxx-yyyy"
}

Those messages stay longer while the device is booting up.....