I have an existing system that needs upgrades and some replacement. I have a 300w Volt Transformer I bought in 2018. The run I have to replace is just at 100 ft long. I was going to purchase 2 kits - the G2 expansion and the Path light expansion kit. All of that will go on 1 single wire run. I'd like to go to a 12 gauge or 10 gauge instead of the 14 gauge in the kits. Can I purchase the kit but get 10 or 12 gauge wire (paying for the difference in pricing of course)? Alternatively, if I buy 12 gauge wire, can I use the 14 gauge that comes in the kits for short runs off the main run. Will that work for voltage concerns? I plan on expanding the number of lights on the 100 ft run in the future.