The season boosts last for a day only. The most effective way to get more tokens is to buy one every day instead of getting to 8000 for 1750 gems. For example, if you spend 100 gems for 17 days, you’ll get a 34000 tokens. In contrast, if you spend 1750 gems in a day then you’ll only get 8000 + 16000 = 24000 after 17 days.
I use 17 days here only because it compares easily with the “spend 1750 gems” vs “spend the minimum required daily” scenario.