Transmission Temp Gauge

[heftylefty58]

I have a 2003 Yukon Denali, and the stepper motor for my battery gauge has died. I would like to do the repair myself. Based on the research I've done so far, I'm leaning towards replacing all 7 stepper motors while I have the instrument cluster out. Not sure if I'll bother with the bulbs.

However, I have zero experience soldering/desoldering so far.
To get the hang of the skill before attempting the real repair, do you have recommendations for practice kits?

I actually have an unused Weller WLC100 iron that's been sitting in my garage for the past ~5-10 years.

I'm guessing I should also buy the following:
https://www.amazon.com/gp/product/B...fl_title_27?ie=UTF8&psc=1&smid=A1B2SF9J2WBIQS
https://www.amazon.com/gp/product/B00030AP48/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER <is this wire too thin?
https://www.amazon.com/gp/product/B00FZPDG1K/ref=ox_sc_sfl_title_2?ie=UTF8&smid=ATVPDKIKX0DER&th=1
https://www.amazon.com/gp/product/B00NS4J6BY/ref=ox_sc_sfl_title_3?ie=UTF8&psc=1&smid=A614WYM65K035
https://www.amazon.com/gp/product/B01I14V4X8/ref=ox_sc_sfl_title_4?ie=UTF8&psc=1&smid=A2BS8NQ5JQVV6T
https://www.amazon.com/gp/product/B01N411WDM/ref=ox_sc_sfl_title_5?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

Any thoughts/guidance/tips are greatly appreciated.