Ubuntu Networking :: Bash Script Over SSH On Remote Server

I've been trying to set up guake to automatically open 2 programs in two different tabs via ssh on my remote server. I have succeeded in doing this, however whenever the last command is run the terminal tab locks up and I can't enter any input, the only command that works is ctrl+c to kill (in this case) iptraf. I think it might be something to do with how I'm sending my ssh password using echo and pipe. This is my script:

Code:
#! /bin/bash
# script to launch multiple guake windows on Network21 local server
guake --rename-tab=Htop21 --execute-command="ssh -t 192.168.1.137 'htop'" &
sleep 5 &&
guake --new-tab=2 --rename-tab=Iptraf21 --execute-command="ssh -t 192.168.1.137 'echo password | sudo -S iptraf'" &

The first and second commands always work, whilst the last one loads iptraf then the cpu maxes out and i can't enter anything unless I kill the program. I've also tried nload and a couple of others, with the same results.