Cutting Door Openings

Hi all,
I wrongly put my question in the build journal. - its had many views and no replies.
I cut a template out from a Kit profile I ordered online. -
I"m using pre made doors though, and I want to get the template right before I use a flush trim router to cut the pattern onto the good (expensive) plywood.
So, I'm really not happy with my first cut out on the door especially on the corners( I used a jigsaw ) , and I am really glad I am doing some testing templates on the crap plywood.
Does anyone have any tips on cutting the corners for the door cut out? the corner of these doors is actually a little proud of the straight area - when they bent the curves in the factory it pushed the curve out a little proud
And since these doors don't have an internal trim ring to hide any of my unscrupulous work........Id like to get it right.
I'm thinking of a tracksaw or circular saw with guide rail, for the straights, and maybe a router with a circle jig? ( cutting out the circles before the straights obviously )
What does everyone else use to cut the corners?
Any advice greatly appreciated.



I wrongly put my question in the build journal. - its had many views and no replies.
I cut a template out from a Kit profile I ordered online. -
I"m using pre made doors though, and I want to get the template right before I use a flush trim router to cut the pattern onto the good (expensive) plywood.
So, I'm really not happy with my first cut out on the door especially on the corners( I used a jigsaw ) , and I am really glad I am doing some testing templates on the crap plywood.
Does anyone have any tips on cutting the corners for the door cut out? the corner of these doors is actually a little proud of the straight area - when they bent the curves in the factory it pushed the curve out a little proud
And since these doors don't have an internal trim ring to hide any of my unscrupulous work........Id like to get it right.
I'm thinking of a tracksaw or circular saw with guide rail, for the straights, and maybe a router with a circle jig? ( cutting out the circles before the straights obviously )
What does everyone else use to cut the corners?
Any advice greatly appreciated.