Go for it now, and not just because I'm old, or that 2021 may be threatened by global warming, a super volcano, solar flare, uncivil war, etc...
The Red Sox have a future Hall of Famer playing in his salary drive season in 2020, and that prospect looks like much more fun to follow instead of any other acquired prospect who has a 99.9% chance of never being as good.
And I'm not worried about restocking the farm system, because I think that will be a forte of Bloom's (and if they happen to suck in the next year or two, welcome the higher draft picks). My mug is half-full and I still haven't had a drink all year...