IWM Reddit Mentions | ChartExchange

Hello Community- lurker here who would like feedback on a Boglehead-inspired strategy, and to see if we are missing anything.

Age 45, looking to be able to retire with spouse between ages 55-65. We both enjoy work... depending on the day.
Currently using Fidelity for everything; exited Morgan Stanley a couple years ago as we made the naive decision use their financial advisory services when we were in our late 30s. Pulled the plug when I sat down one day and saw how much they had messed up our accounts- essentially had opened up positions in nearly 20 funds, many of which were overlapping, and were sitting back and happily reaping our fees, including a parametric account which kept on going up and up.
Between my spouse and myself, we have been able to save multiple single-digit millions for our retirement in the following:
1) A joint taxable account holding 75% of our total retirement savings. 73% of these holdings are in domestic stocks- majority FSKAX and a bit of FNILX, and a odd mix of IEFA, IVE, IVW, IWM, IWR, VBK, VBR, VEA, VOE and VOT- all of the non-FSKAX and FNILX positions are legacy positions from morgan stanley which ported over when we made the switch, and which didn't make sense to sell as the fees are lowish and it doesn't make sense to sell and pay the cap gains. We also have 10% bonds (BND), and we keep our emergency fund in case of job losses/hostage money in FZDXX (money market fund), with low exposure in foreign stocks (4% total in IEMG, also a MS hold-over position).

For the other 25% of our holdings, we have two Roth IRAs (one for each of us) which we use for an annual back-door from an tIRA, and multiple traditional 401ks from existing and past employers, all invested in a mix of SP500 index funds and Vanguard 2045 retirement funds. One of these 401ks is about 50% Roth.
We'd like to have a 80/20 split in low-fee equities and bond ETFs today, towards a glide-path to 70/30ish for when we retire.
What we would like to do: use our 401ks to hold as much of our 20% bond position as possible (eg BND). I made the rookie mistake of not appreciating that dividends from BND are taxed as income when BND is in our taxable account (doh!). Given that our 401ks are around 25% of our total retirement savings, we'd use most of this capacity for BND (or bond EFT equivalents). Then, use first our Roth IRAs/Roth401k capacity and then our taxable accounts for high-growth equities, eg FSKAX. As we glide-path towards retirement and exceed the capacity of our 401ks for 20% bond EFTs, we start building a position in tax-free municipal bonds (we are in Mass, so NIIT) within our taxable accounts.
Bottom-line: the 401ks protect bond ETF earnings from the taxman until distribution; we adhere to the boglehead principles while minimizing tax exposure, and use muni bond EFTs for a bond position in our taxable accounts..

Feedback/suggestions/mockery welcome