That's looks amazing! The kids will love it!
I found them at harbor freight. They are $15 on their website or their stores. They have 3 spotlights on a 25 foot length and have either ground spikes or wall mounts as options. 3 of the bulbs are from ebay, they are Magic Lighting LED Light Bulb Lamp And Remote With 16 Different Colors that can strobe or fade from color to color. They cost me $5.50 each and are amazing...I will be using them for other holidays for sure (only problem is that when they turn on from a timer, they are not on the same setting when they turned off).You have done a terrific job with your display. Where did you get the ground spotlights?