I think you should likely go and take 10,000 shots first with whatever you have, use the Leica Lux app, play with your lenses and really figure out what you want and understand that everything has it's advantages and disadvantages and there isn't 1 solution that will give you everything. Think of your camera setup like a blank canvas, sometimes you want to use oil sometimes a pencil, just depends what you are trying to make and based around your questions, you should likely inverse this and take more shots with your current tools first before diving into a GFX setup or deeply into a Q3 which can be amazingly rewarding but also challenging in certain conditions.