If you're the sort of person who abuses obvious RAW loopholes, the Lucky Paladin dual wielder could drop prone or close their eyes before attacking to induce disadvantage-for-super-advantage...
(3.5+3+3.5+9+9) * (1 - (1 - 0.55)^3) + (3.5+3.5+9+9) * (1 - (1 - 0.05)^3) = 29.0