Mmm, well if smoke was showing i would drop the box, an all hands on arrival would also bring on the extra engine, truck and rescue for RIT, i'd get a 1 1/2" pre connect going and make the 2nd due engine lay in a line of LDH from the hydrant.... oh hang on sorry wrong country, we don't have any of that and the 34 that is arriving 2nd probably has 2 lengths of 64.
Depending on the location might ask for a tanker.