Yes, you will only have a partial wash sale on the $50. Vanguard may or may not report this, so it may be up to you.
I TLH'd about $40,000 in losses last year, thanks to the drops in Jan, Feb, and the Brexit.
To avoid wash sale issues, I keep TLH partners VTSAX and VFIAX in taxable, along with a total international fund (like you)
In tax deferred in Roth, I have REIT, emerging markets, bonds, and the US stocks are in non-substantially identical funds, including small and mid-cap funds. If you didn't want to tilt smaller, a large cap fund could do th trick.
Also, you can set dividends in taxable to go to a Vanguard MM fund, so they won't have to make a round trip to a bank.
Congrats on your upcoming Early Retirement!