With a hyperthetical USD 50,000 would you invest in bitcoin or use the money to fund a margin trading account
Nothing will ever compete with investing in bitcoin directly. Any other strategy including trading itself (traditional way) is bad, mainly because of the high volatility of the bitcoin market which makes margin trading even worse specially if you are going against the market which is most of the times. Not to mention that margin trading is more of a gamble, even worse than trading.
(the trades will all be made by trading bot handled by signals group with 100% return)
In other words you are going to be scammed out of all of your money with 100% certainty.