Hi William,
the Maximum Yield strategy is already quite aggressive without leverage, and we would not recommend anybody to invest more than 15% of net-worth into it. Now, leveraging an already 3 times leveraged bond ETF and a short volatility component would make this really a wild ride, independent of borrowing expenses and costs for leveraged ETF.
The historical volatility of 22% and a max drawdown of above 20% are further increasing when applying leverage, while the return will not increase linear due to borrowing costs.
I’d strongly suggest you consult with a registered investment advisor before doing such an investment, and rather have a look at some more balanced portfolios using our Portfolio Builder.