Goals from Mark Wright and Glenn Murray gave the Seagulls a 2-0 win over Scunthorpe in their final pre-season game and Slade is confident that his new signings will gel.
He said: "We're gradually getting better.
"There was some good football and good movement and we created a lot of chances.
"What I will promise, and I said the same to the team before a ball was kicked, is that we will have the most honest, hard-working team in the league and that will take us a long way."
Slade also revealed that he hoped to complete the signing of former MK Dons midfielder Alan Navarro next week.