TMUX for automation / startup monitoring

The problem: Need to start multiple services all at once and also be able to monitor them somehow (there's no way to do logging to a file, because custom CLI tool).
Example use case: Spin up dev server in one click - start server, IDE like VS Code, and Docker subservices (database etc), de clutter multiple terminal windows into one and to monitor logs more easily.

sudo EDITOR=nano crontab -e
@reboot bash /path/to/script.sh

script.sh

#!/bin/bash 

SESH="startupIO" 

tmux has-session -t $SESH 2>/dev/null 

if [ $? != 0 ]; then 
    ## 8000
    tmux new-session -d -s $SESH -n "rhttpds"
    tmux send-keys -t $SESH:rhttpds "bash /home/user/Desktop/services/startup/rhttpds.sh" C-m 

    ## 8024
    tmux new-window -t $SESH -n "rhttpds80" 
    tmux send-keys -t $SESH:rhttpds80 "bash /home/user/Desktop/services/startup/rhttpds80.sh" C-m 

    ## 2121
    tmux new-window -t $SESH -n "uploadFTP" 
    tmux send-keys -t $SESH:uploadFTP "bash /home/user/Desktop/services/startup/upload-FTP.sh" C-m 

    tmux set-option -t $SESH status on 
    tmux set-option -t $SESH status-style fg=white,bg=black 
    tmux set-option -t $SESH mouse on

    tmux select-window -t $SESH:rhttpds80 
fi

Reconnect to terminal
tmux attach-session -t startupIO

Switch between windows
Previous: Ctrl+B then P
Next: Ctrl+B then N
Other shortcuts: https://tmuxcheatsheet.com/

Stop all
tmux kill-ses -t startupIO