There's more than one way to skin a cat, as they say.
The fast machine way: table saw to rip the board to width, followed by a run over a jointer to clean up the saw marks. Then a few passes through a planer-thicknesser to reduce the thickness. And finally cut the parts to length with a chop saw.
I wonder if it would be worth trying to reduce the thickness of the board by re-sawing instead of planing. You'd need a decent-sized band saw for that. I'm not sure if it's worth it to take 10mm off the thickness. If I had a bandsaw I'd probably give it a go though, because I hate to waste anything, and the thin piece of excess material that'd be re-sawn off could be useful for making internal trays/dividers or something like that.
The hand tool way: use a rip saw to rip the board to width, and a bench plane to make the cut edge straight, square and smooth. For a 1.5m board this is not too much work, it wouldn't take too long. You could even do it with a cross-cut saw but it'll take a bit longer.
Reduce the thickness with a scrub plane followed by a smoothing plane. This bit sounds like a lot of work to me!
Cut parts to length with a tenon saw, and use a plane on a shooting board to clean and square up the cut ends. If you're very good with the tenon saw you might not need the shooting board, but I always do.
I don't have any of the machines I described in the first way, but I'm also too lazy to do everything the second way, in particular the thicknessing. So personally, I'd find a local timber merchant and pay them to rip the board to width and plane it to thickness, then take it home and do the cross cuts by hand.
Last edited by AndyL; 04-16-2015 at 08:17 AM.