So it's hard to give specific advice without more details about your future plans. For ex., you may want to start a Roth pipeline, but the timing of that depends on your tax rates at various times and your other potential sources of income (e.g., your large taxable balance gives you lots of flexibility as to when to incur income).
But let me address the tech sector thing: yes, you are massively overweighted. Right now, you have the game won: you have over $1M in assets, and you clearly have a high-paying job that is allowing you to save huge amounts of money every year. You do not need jacked-up returns to be able to FIRE in 4-7 years; all you need is standard market returns and reasonable expenses. You could FIRE today if you wanted to live a low-key life in a LCOL area.
The biggest risk to your future plans right now is you: if you chase returns and overweight a sector that then craps out, you will have outsize losses that require playing a lot of catch-up. Do you also work in the tech sector? I'm guessing? Then you could also have the joy of losing your job on top of it all -- and with $16K cash, you're likely to have to sell low just to pay the bills.
You're old enough to remember the tech crash in 2000, although you probably weren't working in the area at the time. Take it from someone who got to live through the bloodletting first-hand: everything crashed at once. The tech sector crashed, and my DH's plant shut down* (I was pregnant at the time, btw, for some super-extra fun). The market crashed, so if we had needed cash, we'd have taken a huge hit. And the real estate market crashed because all the plants were shutting down, and there were no jobs to support those prices, and far more people leaving town and/or downsizing than there were people moving in. No, I'm not saying that will happen again. But that's the kind of thing that can totally derail your plans, simply because you're over-leveraged in the area that runs into a huge downturn. So why risk that if you don't need the extra portfolio boost to reach your goals?
Also: there is a huge difference between individual bonds and bond funds. Bond funds can and do lose value when the shit hits the fan. If you are looking at your bonds as the "safe" part of your portfolio, you want individual bonds, because then you can choose to hold them until maturity and obtain the interest you expected (whereas a bond fund will have to sell -- and sell low -- if its holders withdraw at a bad time).
Finally, if you have a HSA at work, max that puppy out and then pay for your medical expenses out of pocket to the extent you can. That is a fantastic retirement asset if you can afford to let it grow.
*Added note: he was not employed by a dotcom that was trying to spin eyeballs into gold. He made actual chips for actual devices, which we thought was safe. But apparently when your biggest customer gets hammered, shit flows downhill.