Thanks for the comments, folks! Lots to think about.
Regarding why I have VGSTX, that one is a hold-over from when I first opened my RothIRA. I didn't have enough to meet the minimum for VTSAX so I chose that one instead since I could meet the min and it seemed to be fairly broad. In hindsight, I guess I could have went for the ETF version of VTSAX but this is just how it worked out. From that point, I had all the auto deposit settings configured and never touched it other than to make changes to the amounts when the IRS upped the contribution limits. I'm not opposed to moving that over to VTSAX and have considered it but just haven't out of laziness.
For more info, the traditional IRA is just for 401k rollovers that happen during job changes. Employer 401ks have been my primary saving location so the tIRA holds the most and includes most of the VTSAX and all the VBLTX. The RothIRA is only a few years old and is funded to the max. My income has recently gone past the limit for any deduction on the traditional so I figured this is the next best thing. I'm between jobs (a month off between gigs, woo!) so there's no 401k until next year but I'll be maxing that one with whatever I can find that resembles an SP500 low cost fund. I don't have the fund list offered by the new job, yet, so that's up in the air. After maxing the 401k and RothIRA, the regular brokerage account (all VTSAX) gets whatever money I have left.
So, the 401k gets funded the most, followed by the taxable brokerage account, followed by the RothIRA (just because the limits are so low). The traditional IRA just sits there doing its thing and only sees funding when I change jobs which I hope not to do for a while.
For the 90/10 AA, it is aggressive from what I've read so if wisdom says it would be better to get that closer to 80/20 then I'm on board. Would keeping with VTSAX and VBLTX still fit the bill or should that be spread around in some other fashion? I'm quite new to all this so any suggestions are appreciated including just sending me off to read something. I'm still a ways out from FIRE, have a (hopefully) stable career, and no family to support so I can probably tolerate some risk but I don't want to be reckless. I'm not sure where that line really is, though. Late 2018 didn't bother me much but it was over pretty quick. My main coping mechanism was to just stop checking my account balances. :) In 2008ish, I was only a few years in the working world so I had very little invested and didn't see a shocking loss. Given that, I'm not out to win some kind of investment race, I only want to finish and retire while I am young enough to enjoy it.
Thanks!