You can use dividends to buy growth stocks. 4.5% is below inflation, not a good investment.
There are also very good bonds yielding 7-12%, most with $100k-500k minimum size though and I’m not sure you can buy them all with IBKR (I do that via the bank).
Last time I checked - couple months ago, short to medium term treasuries were yielding close to junk corporate bonds. The 0.5% increment for these B/C type corporate bonds was not worth the added risk. Things might have changed in recent months so I would be curious to know the type of companies or maybe countries you are referring to, especially at these yields today.
I already have accumulated dividends ETFs but being globally diversified the yield rarely go beyond 2.5%.