John Mousinho wants to see Pompey continue their winning run when Gillingham visit Fratton Park this evening.
And he believes the EFL Trophy group stage contest can provide valuable opportunities to impress for members of his squad.
The hosts would take a giant step towards reaching the knockout stages with a victory after claiming two points from their opening match against Fulham under-21s.
And with a break before the next league fixture, Mousinho does not have to worry about resting weary players.
The Blues boss said: “We’re going to be really strong, especially as we don’t have a game at the weekend.
“There will be quite a few guys involved who played for us against Port Vale on Saturday and not as many changes as before.
“We want to keep up that winning mentality and we also want people to come in and compete for spots to give me a headache.
“Conor Shaughnessy came in against Forest Green for a cup tie earlier in the season and has played in every single league game since.
"We want to keep up that winning mentality and we also want people to come in and compete for spots to give me a headache."
“Zak Swanson has always done well, as has Jack Sparkes, while those minutes for Sean Raggett and Ben Stevenson ensured they were fully prepared at the weekend.
“But we also want to advance as far as we can in the competition and provide more valuable matches for this squad.”
Gillingham made the surprise decision to sack manager Neil Harris last week, despite the side sitting just a point outside the League Two automatic promotion places.
Mousinho said: “It’s a strange situation – it’s difficult for us to prepare because we have no idea what they’re going to do.
“But they had a good win against MK Dons at the weekend and the most important message for the lads is that we’ll have to see what comes on the night, then adjust accordingly.”
Connor Ogilvie is not expected to feature against the Gills, despite recovering from the groin injury that has kept him out of the past four games.
Mousinho said: “He’s been back in full training with us, but I think it is too soon and we don’t want to take the risk.
“Kusini Yengi came through the weekend absolutely fine and all the other injured players are progressing nicely.”