Size "67" will do up to 450g in a large jar.
Size "8" says one bag will do 28g. I have found the size "8" works well in a 16 or 32oz jar. (I know metric/imperial back and forth)
Not really a size in between unfortunately. With the way you're growing, a 10 pack of the "8"s might be the ticket. Plus, if you go to GroveBags later, you can always use the jar/boveda to get to 62% and then bag and seal for cure/storage.
However, 2/3 size "8"s may be easier to fit and find. If you leave them in their sealed packaging they stay fresh for almost 2 years. The packs themselves, 3-4 months. Also, if you overdried i have found the Boveda bags raise and hold RH better than pulling it down. I would also advise having a hygrometer in the jar for a quick visual check in case you need to add another bag if you go with the small size.
I'm using both products (grove/boveda) in combination.
I recommend ordering from the boveda website as Amazon and other third party sites don't have everything and don't guarantee you fresh packs.