So first, let me post the two relevant texts:
Object Possession, GreaterSchool necromancy; Level occultist 5, psychic 6, sorcerer/wizard 7, spiritualist 6, witch 7
Range medium (100 ft. + 10 ft./level)
Target unattended Gargantuan or smaller object (minimum Tiny) or construct
Duration 10 minutes/level (D)
This spell functions as object possession, except as noted above. The possessed animated object has a number of Construction Points appropriate for its size (up to 5 CP for Gargantuan objects). Your silver cord extends to medium range (100 ft. + 10 ft./level).
You can attempt to possess a construct instead of an unattended object as your first possession with this spell. If you do, this spell acts as control construct, except as noted above.
... and ...
Control ConstructSchool transmutation; Level sorcerer/wizard 7
Casting Time 1 standard action
Components V, S
Range close (25 ft. + 5 ft./2 levels)
Target one construct
Saving Throw none (see text); Spell Resistance no
You wrest the control of a construct from its master. For as long as you concentrate, you can control the construct as if you were its master. You must make a Spellcraft check each round to maintain control. The DC of the Spellcraft check is (10 + the construct's HD). If the construct's creator or master is present and trying to control the construct, you both must make opposed Spellcraft checks each round to control the construct.
So if I use greater object possession to jump into a construct, do I even need to make any checks? The former spell implies that it replaces control construct's school, range, target, and duration with its own—"10 minutes/level" replacing "concentration"—so the Spellcraft check would be completely unnecessary, wouldn't it?