Split Type Aircon: Which is best?

[Balikpinoy]

Kaya ba ng 2 na 2.5hp split type ang 60sqm?

Office ko has 1 2.5 unit for an open space 57sq meter office with 8 persons., kaya naman. Pero ngayon summer, thinking of adding 1 more 1.5 unit para mas malamig.