OP's concern is about his privacy from his Whirlpool coinjoin being ruined from consolidation:
If they're all consolidated, you've just undone all the mixing previously.
With a WabiSabi coinjoin, he can privately consolidate his 20 UTXOs into one UTXO if he wants to (depending on their value), or he can split it into multiple coinjoin outputs in case he wants UTXOs of specific sizes.
I highly recommend NOT to consolidate the inputs. Use whatever tool you wish, but I would also recommend what o_e_l_e_o said. Just send every UTXO in various time intervals and you will be more than ok. Keep it simple. That's my opinion, but I must say I am biased because I don't trust Wasabi at all.