Having higher holdings in Bitcoin is not dangerous in my view if you have control over your investment strategy like, if you've bought all of your targeted coins on an unplanned strategy there's a higher chance that you'll suffer a loss, wether its planned for mid-term or long term because the accumulation strategy you decides is for risk management. As you are investing in a volatile asset and you are not timing and controlling your investment how can you be sure of good returns as you didn't even time to buy at cheap?
So having many bitcoins wont be dangerous if you've planned your accumulation, for sure there's huge potential in Bitcoin but if you are buying at peak and expecting the unrealistic profits how it can be safe.
However, if you are trying to invest and maximize the amount of bitcoin in exchange for quick profits, you will only be frustrated in the end. Don’t fall for quick profits as they may only be for temporary but focus more on creating a long term investment, and going into bitcoin will be a perfect choice.