[Ayesh]

I'm sure there's a lot of excitement on moving in to a new potential venture, and there are many good stories of those who pull it off!

Unfortunately luck plays a big role in the mobile games market. Some simpler games (like flappy bird) make a ton of money, but most indie games often get only short bursts of cash flow.

Because you did not indicate that you have worked on a game before, I'd strongly urge you to not burn the bridges with your current job. Perhaps go for a 50:50 for work:game.

It's great that you have a long runway. Most games only take 4-5 months to develop. Try to get the product out as early as possible.

You might need to invest a significant amount of money on advertising. They are relatively cheap in CPC, but it will be a significant cost early on nonetheless.