You know, I think the "suckyness" in the jigsaw was more my talent than anything else. After making a few more cuts with the jigsaw, I'm now pretty comfortable with it. (Probably because I know I can use the router to clean up any crap leftover). I decided to cut off the corners of my rectangular piece of plywood tonight. I got all four corners cut so close with the jigsaw that a simple hand plane will straighten it out perfectly. Heck, these were nearly 7" segments that I cut perfectly straight! I'll be just fine cutting the long portion now that I've gone ahead and made some perpendicular incuts every inch or so. I'm really seeing the panel cut out now and it's making me quite happy.
So far, I've got the following done;
Cut out basic outline of CP within 1/8" on 7 of the 8 sides.
Cut out the P1 Start and P2 Start button holes.
Cut out all 7 buttons for P2
Cut out basic outline for 4-Way joystick.
Still need to do the following;
Use router and smooth our the edges of the plywood.
Cut P1 button holes.
Cut 4-way Joystick Button holes.
Cut 2 Trackball button holes.
Use plunge router to route out inlays for joysticks.
Cut bolt holes for all three joysticks.
Get Trackball and Spinner and cut their openings and inlays.
Finish Designing Artwork.
Get Lexan/Plexiglass and cut that out.
Get more plywood, cheaper the better since it's the side and bottom, and cut out the sides and bottom. (This should be as bad since once I get the dimensions set, it will just be a bunch of straight cuts that I will use my father's table saw for, or have Home Depot cut for me).
Get I-Pac4.
Wire everything up.
Cry as I play games using arcade controls.
Finish up cabinet.

So I have a ways to go, but I'm getting better every day. I'm still a tad bit nervous when using my power tools, but that's a good thing since it will keep me alert and aware of what I'm doing.