The Jags boss wasted little time in delving into the transfer market once the curtain had fallen on his first campaign in the dugout, moving swiftly to tie up a hat-trick of new stars just days after the end of the season.
Midfielder Hugh Murray joined from St Mirren, youngster Steven Lawless arrived from Motherwell and Aaron Muirhead made the jump from the Third Division after leaving Annan.
The final piece in the first-team jigsaw, for now, was former Hibs star Sean Welsh, who has penned a two-year deal to make his loan switch permanent.
And McNamara is delighted with the work the Jags have done so far ahead of the big kick-off.
He said: "Because things are tight financially, we wanted to act quickly this summer and that is what we have done by getting the four players in early.
"It was important to get the right players in, players I had identified, and not hang about waiting to see what was left at the end of the window.
"I'm delighted with the way we have done our business and the squad is looking pretty good with players pushing each other in every position.
"I think each of the four players we have signed up are terrific acquisitions for the club.
"Hugh has a lot of experience and then we have three younger players coming in too.
"Steven is a fantastic prospect and I am confident he will do well for us and Aaron is making the step up from the Third Division.
"We have experience in the spine of the team with Archie at the back and Hugh and David Rowson in the middle of the park.
"And we have managed to keep the likes of Balatoni, Paton, Welsh and McGuigan as well, which I am pleased about."
With his summer building work all but completed, McNamara has just minor adjustments to make to his squad before the season starts as they attempt to haul themselves into title contention in the coming months.
Youngster Caolan McAleer is set to become the latest Jags player to commit his future to the club as he prepares to put pen-to-paper on a two-year deal, but he is likely to play his football away from Firhill in the immediate future.
McNamara said: "Caolan is definitely one for the future. Getting him in on a two-year deal will allow us to work with him and improve him from an early age.
"We will look to farm him out so that he's getting regular action and used to playing at a higher level."