Even if we say that Past Georg Raizen is weaker than his present self and he only scales to Kurnugi who is stronger than Suzaku at minimum (though it's implied he fought Selene), Base Post-Kirin Laxus should look like this:
2.7 yottatons in base (via matching Kirin), higher with RLDM, 5.4 yottatons with LDKM/Elexion's Soul, 5.52 yottatons with LDKM + RLDM (as weird as that looks).
If we scale Elexion to the OG Georg Raizen, Round 2 and afterwards Laxus would look like this:
2.7 yottatons in base (via matching Kirin), higher with RLDM, 8.22 yottatons with LDKM/Elexion's Soul, higher with LDKM + RLDM (as weird as that looks).