Graalians - Gold rush idea!

Ok so when i think of ol west times, i think of gold, so i thought of this event idea called gold rush. It will happen 2 days a week for about 2 hours. What happens is when it is gold rush time, there will be this little mine cart track which leads into a side of a cave somewhere and you go down it (only open during gold rush time of course). I have two ideas for what could happen during this.
1st idea: you enter a cart as soon as you go down the cave and it will be kind of like temple run. 3 tracks and you can move left to right, jump and duck. There will be peices of gold randomly scattered around so you must collect as much gold as possible. The gold could be like the normal gold you get from mining or you could a completely new shop were you spend the gold on melees/items but the downside to this, we already have a gp shop coming and lots of different currnecies in game can get annoying. When you die/crash you have to wait 5 mins to go back in

2nd: there could just be a normal cave where you mine the rocks to get gold. But the upside to this is you can be any level to mine. Again with the gold, there could either be a new shop for it or sell like normal gold.

The 1st idea would be better to have but much much harder to make. Post down below you opinions on the idea and/or anything you would change

One more thing, can you make carriges for horses so you can invite people? Lol