By my understanding, the 'Pump Ball into Box' TI tells your team to throw floated balls into the penalty area, results in more crosses generally.
To sit deep and go long for a pacy striker to chase look at increasing to 'Go Route One' and 'Pass Into Space' - route one puts balls long and high over the defence, pass into space puts diagonal balls from midfield through the defence for strikers to run on to.
If you are using wingers to attack, then 'Clear to Flanks' and adjust your width accordingly, although this is usually more geared to when you are under the pump and desperately defending your own 18yd box.