The Saints' first- to fourth-year players returned to training on Wednesday, with the senior players due to return on November 18, at which point the club hopes to have appointed a replacement for sacked coach Scott Watters.
Newly appointed high performance manager Adam Basil guided the players through their first session this week, while six coaches were on deck to coordinate football drills.
"We're really well staffed and definitely in good shape to fill the gaps until a senior coach comes in," Sexton told AFL.com.au.
"At the moment, there are three assistant coaches and three development coaches on deck … and it's a very experienced coaching staff.
"Tony Micale has been around a very long time as well as Paul Hudson and Aaron Hamill.
"The assistant coaches and development coaches that are at the club were more than capable of putting the first three to four weeks of training together."
St Kilda recently lost assistant coach Dean Laidley, who departed for Carlton, but assistant coaches Adam Kingsley, Micale and Sexton remain.
While Kingsley is reported to have been shortlisted as a candidate for the vacant senior coaching job, along with club great Robert Harvey, Sexton said he personally was comfortable remaining in his current role.
He said there was plenty for the club's next coach to be excited about.
"I reckon a new coach would come in really looking forward to a strong leadership group and a really exciting group of younger players," he said.
"We've traded in and we've got three picks inside the top 20, so there's going to be talent.
"The club's excited about the future and wants to press forward and improve … there's quite a lot for the new coach coming in to work with."
Sexton said the club's young players were "resilient" and starting pre-season without a senior coach was not an issue for them, with their thoughts focused on improvement.
He said the next senior coach would inherit a group of players that was up and running.
"I reckon the overwhelming thing on Wednesday was the nervousness of the players," Sexton said.
"As a general rule they've come back fit, they look really strong, and a lot of them will be able to build on their debut seasons.
"Their priority should be how they can improve as players, and when they get on top of that their next thought should be how can they make the club better."
With on-field preparations underway, the Saints have set up a six-person committee to identify their next coach, chaired by head of football Chris Pelchen.
Club board members Andrew Thompson and Danni Roche join recently retired Saint Jason Blake, former Geelong premiership captain Tom Harley and consultant psychologist Matti Clements on the panel.
As well as Laidley, the club recently lost development coach Jaymie Graham, who returned to Perth and has been appointed at West Coast.
Twitter: @AFL_Nathan
