Awesome, congrats on the lucid!
I like your target idea. Reminding yourself of your goals just before bed every night is a great way to send the signal to your subconscious. You can include your zombie dream sign in there as well, so it stays fresh on your mind along with your goals
Also, if you ever end up doing a WBTB alot, or attempting DEILD, focusing on your target as your going back to sleep is helpful. I do this when I WBTB + WILD: after I wake up, and as I'm drifting back off, I make an effort to remember my next lucid goal (usually a TOTM, but it can be any personal goal ofc).
Good luck!