Lynn will be without star players Sisilia Tuipulotu and Alex Callender for what he expects to be a “very competitive” game against Scotland in Edinburgh.
“I know a lot of the players from the PWR, they’re a good outfit but we are too,” he said.
The fixture takes on extra significance as the two teams also meet in the opening Pool B game at this summer’s Rugby World Cup in England.
“It will be a dress rehearsal, some of our girls will only have a six day turnaround.
“I’ve got full trust in these girls and I’m very confident we can go up there and really have a go at Scotland.”
Lynn also hinted at what Wales will look like under his management, with previous coach Ioan Cunningham’s reign being very much about the power of the pack.
“I think we’ll see some variety in our game,” he said.
“We’re going to enjoy defending, we’re going to come alive to get that ball back.
“We will have a very good set piece and also I’ll give these girls a licence to inspire and we will be moving the ball to the edges and releasing our athletes.
“I think we’ve got to make sure we get that mindset of working hard for each other.”
