It can't be said that I've never boiled two gallons of wort down to a pint, but when I did, it was because I'd forgotten about it, with a thermal cutout saving the equipment from total destruction. On that occasion it was with low gravity late runnings for a yeast starter, Had those been first runnings (>1070) I hesitate to imagine the outcome.
Otherwise your modus operandi seems totally logical, except I would suggest you might consider reducing more like 4 litres to 1.5 to avoid having to scrape the pot to extract the result.
Good luck, Traquair House is only just across the border and English brewers copied many advancements from the Scots. As long as you don't burn the wort I'm sure you'll produce something close to the actual article.
Otherwise your modus operandi seems totally logical, except I would suggest you might consider reducing more like 4 litres to 1.5 to avoid having to scrape the pot to extract the result.
Good luck, Traquair House is only just across the border and English brewers copied many advancements from the Scots. As long as you don't burn the wort I'm sure you'll produce something close to the actual article.