Social moved into the last 16 of Lincolnshires elite competition with a comfortable 5-1 win against last seasons semi finalists Cowbit on Sunday morning.
Coupland said: "I think we made a statement yesterday.
"We have finally got the campaign going and we feel the County Cup is something we can achieve good things in, just like every other competition.
"It was a good performance, very professional. We can move on from this."
Coupland added: "I think our defensive performances have been good recently and that is starting to give us the platform to go and attack teams.
"Sometimes you are just unlucky to get a goal against.
"Here, a good performance throughout the whole game was rewarded.
Welton needed to play patiently throughout the first half hour as the visitors looked to deny them time on the ball. Yet, with slick passing, Welton were constantly able to probe away at the Cowbit defence and once the outstanding O Halloran scored the opener they took complete control.
O Halloran who is starting to forge a decent partnership in midfiled with Neil Stocks said,
"It is fantastic am delighted to have scored two goals in one game but the most important thing is the result and what the team is doing and I am very happy with the result.
"Everybody is doing well and everyone is happy.
“We’re in the hat for the next round and there’s obviously some teams to avoid but if we can get a home draw then we will be confident.”