It's not a good idea selling your 3070ti and 3080 ti right now

1. You will sell lower.
2. LHR graphic cards are already unlocked.
3. A2000 is not cheaper, you will need to add more money from your pocket with the RTX 30s money.
4. 3070ti do 80MH and 3080 ti do more, no point in selling

This your idea only make sense if we are in a bull market .