Speaking to the press this afternoon, Wilson said, "I saw Chester play a few weeks ago and they were excellent. When I saw the type of football they played, they surprised me.
"I was really impressed with them. They want to get on the ball and play and express themselves. They're not one of these typical bish-bash teams that everybody expects them to be because they're out of the league.
"Steve Burr's got them playing very well. We've done a lot of research on them. The players have got loads of information about what they're going to be up against. We're not going to take them lightly at all. But if our attitude and application is there from our point of view, we've got a good chance. of getting through to the next round.
"Some of these lads can play football. We underestimate these lads and teams that don't play at the top level and people can be taken by surprise. It's why I have to make sure we're well-educated and know what's up against us."
Wilson is definitely without second-highest scorer Sam Winnall, who will miss out the next few weeks at least with a hamstring injury, but welcomes the return of Club Captain, Martin Cranie.
Experienced forward Leroy Lita stepped in on Tuesday and the Barnsley boss was pleased with the striker's effort.
"He did play very well," added Wilson. "Even though he didn't have a goal to show, his contribution was fantastic. With other players vying for that spot, Marcello's (Trotta) in there and Kane (Hemmings) as well. With a bit of luck that competition can push one or two on.
"Leroy needs games on the pitch, more than anything.
"Joe's (Dudgeon) slightly better than he was. We won't make a decision on Joe or one or two others until Sunday morning. We'll make more of an informed decision on Sunday morning.
"We've got Martin Cranie coming back, (Jean-Yves) M'voto's been injured and Dale Jennings. There's one or two who might be in the shake-up this weekend."
