SPMO
Invesco S&P 500 Momentum ETF
stock NYSE ETF

That depends entirely on whether you want to pull cash flow now and your risk tolerance. Something like this would be fine: $150k QQQI, $150k SPYI, $200k SCHD, $150k VGT, $100k SPMO, $600k VOO, $100k gold/silver/Bitcoin, $50k emergency fund in HYSA.

I totally agree I adore SPMO so much I could go all in on it, but then I'd have nothing left for SMH and DRAM

If I were you I would trim or remove that SCHD position and add AVUV and VXUS. Other than that, this seems fine but it is also a highly volatile portfolio. I love SPMO though, it has a place in all my ports.

IMO, there are tons of ETFs out there that have different strategies. Pick the strategy first and then pick the ETF you want. There's almost definitely something out there for you. The ETF itself provides the diversification you desire. Usually, there's no need to complicate things.
In your case, it looks like you could pick VT and be similar to what you have.
IMO, VT is not that risky and pretty straightforward.
Do you only have Roth? Or do you have pre-tax accounts and taxable investment accounts?
In my situation, roughly 20% of my assets are in Roth and 70% of my assets are in pre-tax. I have run my retirement scenarios and it is extremely unlikely I will ever touch my Roth assets so I have my highest risk ETF in my Roth accounts. I have all my Roth invested in SPMO which has done well for me. For my pre-tax accounts, I originally intended 70/30 split in S&P 500 and international, but due to one of my international ETFs exploding upward, my balance is off now. I'm trying to decide whether to ride it out or rebalance.

Oh I know it is for sure. SPMO is good eating right now.

You say that jokingly but honestly the momentum strategy is legit, it works. That's why I invest heavily in SPMO.

QQQM or SPMO

SPMO has performed better in recent downturns, but it's definitely not "safe". Big money shifts funds into value ETFs like SCHD in downturns as well, which has historically shown to be a strong hedge. SGOV is the ultimate safe play.

I would definitely recommend a percentage, up to 20% a piece, with some SMH (Semiconductors) and SPMO (S&P Momentum) with his core being VOO. Your recovery time invested in riskier more volatile etfs will make a huge difference as you hold down the line and continue to buy whether up or down.

VTI is the slightly better choice. Then do some research to see if investing into VXUS sometime in the near future makes sense to you.
I think a really simple portfolio is 60% VTI, 15-20% VXUS, and then 20-25% into something more aggressive like FTEC or QQQM or SPMO. Or do 10% into one of those and 10% into something really aggressive like SMH or DRAM.
60/20/20 VTI/VXUS/AGGRESSIVE

What's the rest of your portfolio? Hope you have some SPYM to balance things out a little. Maybe some SPMO also

I do SCHG, SPMO, VTI, VXUS 35,15,35,15%

SPMO or VOO

I would start with a few ETF’s. I hold SPMO, QqQM, SMH, SCHB, DRAM,VIG.
I also hold several individual stocks.
The important thing is to get started.

Just buy SPMO and sleep better at night

I bought 2000 shares of Amazon 9 years ago. My fidelity rep kept telling me it’s dangerous to have that much in one stock. Didn’t sell, just kept buying about 50k of other things like SPMO, SCHD and FXAIX to balance it out, but I have over 500k in it now, and maybe I’ll sell some off to use some tax loss harvesting, and buy more SPMO

I also like AIS and SPMO, but do not get too greedy. Keep all these high flyers to no more than 20% of your portfolio. If you still want to get edgy in the 80%, go with more mainstream ETF's like VGT and/or QQQM

VOO/VXF is my top holding and my safe play but I like SMH and and just added SPMO as my main holding for my IRA

Yeah I'd drop BTC for sure and I'd throw it in both QQQM (has lower fees than QQQ) and also SMH, you might even consider some other big ETF names, DRAM, SPMO, just to name a few. Check those out.

I'd recommend SPYM as a good long term hold simply because it's the s&p500 and it comes with the lowest fees possible. If you want to spice things up a little you can tilt towards something like SPMO or SMH