im sure the brakes will pull it up, i'd be more worried about how many times in a row they will last being only a solid disc

if the calipers are to suit a solid disc then they are actually hilux calipers not landcruiser ones. Cruiser ones suit a 20 something mm thick vented disc which might be a better way to go eventually if you end up getting brake fade with the solid discs as im pretty sure they suit the same diameter rotor of the hilux ones but are a slightly different offset

but i think simon(sikyne) kinda beat you to fitting real brakes under 13s with these