Mikey Harris was delighted with the manner in which his Academy side beat Thamesmead in the FA Youth Cup.
Pompey lived up to their status as favourites by overwhelming the non league side 7-3 and progressing to the third round.
Conor Chaplin scored a hat-trick and missed a penalty in the victory.
There were also goals apiece from Brandon Joseph-Buadi, Adam May, skipper Brandon Haunstrup, with substitute Fahad Rwakarambwe rounding off the scoring in the last 10 minutes.
Harris said: ‘The boys did very well and I was really pleased with the way they applied themselves.
‘The whole squad played their part in the victory.
‘Credit to Thamesmead because they never gave in and they worked very hard and gave us a good game.’
Pompey took the lead at Thamesmead after just two minutes when Chaplin coolly slotted the ball past the home goalkeeper.
Joseph-Buadi doubled their lead midway through the first half, bursting into the box and firing into the net.
In-form Chaplin then collected Christian Oxlade-Chamberlain’s through ball and fired home Pompey’s third late in the first half to give them a comfortable three-goal cushion.
The striker then turned provider to tee-up Adam May for the fourth goal.
However, immediately afterwards Pompey conceded their first of the match.
Jack Keaveney pulled a goal back for Thamesmead but Pompey still went into the break 4-1 up.
‘Scoring those first three goals was a bit of a negative, as we started playing as individuals rather than as a team,’ said Harris.
‘But we got back into it in the second half.’
Early in the second period, May was brought down in the box, but Chaplin hit the resulting penalty over the bar.
Nevertheless, he soon made amends for his miss when he collected Calvin Davies’ pass and chipped home to complete his hat-trick and give Pompey a 5-1 lead.
The hosts did not give up, though, and netted a second goal, which was quickly cancelled out by Pompey’s skipper Brandon Haunstrup.
With just under a quarter of an hour left, Thamesmead made it 6-3 before substitute Fahad Rwakarambwe hammered home Pompey’s seventh on 81 minutes.
They will now play a prestigious home tie against Bolton Wanderers at Fratton Park.
‘It will be a great opportunity for the lads to play at Fratton Park in front of a home crowd,’ said Harris.
‘I would encourage all the fans to come down as it’s a great opportunity to get behind the boys.’
POMPEY: Pompey: Bass; Davies, Field, Nilsen, Haunstrup (c); Granger, May; Oxlade-Chamberlain (Rwakarambwe 46), Chaplin (Sayers 72), Joseph-Buadi (Haitham 55); Gill
Subs not used: George, Widdrington