Hi Troll1
Welcome aboard. I hope your build goes great and works first time.
In your parts list you've changed the SPST switches from simple Off-On to On-On, which would make them SPDT. They'll still do the job.
The J201 and 2N5088 are transistors, and the 1N4148 is a diode - but they could all be classed as semiconductors.
The C10K pot may be hard to find.
I haven't checked your full component list, as I assume you have done that correctly (I'm sure you've checked it a couple of times yourself).
As to your other questions:
Resistor type shouldn't matter on this type of build. I prefer metal film, but either type will do.
Capacitors: 10 and 100uF are electrolytic. Get the 'stand-up' type with legs at the same end. Just make sure you put them the right way round (ie, +ve where shown on the diagram).
Other caps - try the metal film box ones (usually yellowy coloured) - but any other non-electrolytic type should do the job. Just make sure the distance between the legs (pitch) suits the distances on your board.
Box: Go for the 1590B. I don't have the dimensions of the 1590A to hand, but I don't think it would all fit. The 1590B is a standards pedal size, and will give you plenty of room to get your soldering iron in without frazzling everything.
PCB mount pot: I'd go for a normal pot for now. If your box drilling is out, a PCB type can cause you problems (like pushing your board to one side so it doesn't fit properly.
Wire: Some people prefer to get one big length of wire, so all their wiring is in one colour. While this can look pretty cool, it makes fault-finding VERY difficult. I personally use as many colours as I can, reserving red and black for the power connections. I tend to use yellow for my input and blue for the output on ALL my pedals, but you may have different preferences. If you intend to build pedals for years to come, then you could invest in a 100m reel of each colour - it works out far cheaper in the long run. Otherwise I'd just get a couple of metres of each colour for now. You can get single-strand or multi-strand. Different people have different preferences, but for pedals I prefer single strand.
Components for off-board wiring: The only ones I'd use are pins to go on the veroboard. I prefer to solder my wires to pins than to pass them through the board for soldering to the tracks/traces. Correct fitting pins may be difficult to find, so you may prefer to wire directly to the board.
Wiring (links) across the different strips of the board: You could use the same wire that you use for your off-board wiring, but the insulation tends to melt, and things can look tatty. If you can invest in a reel of tinned copper wire (TCW), get 22swg (preferable) or 24swg (a bit thinner). Cut a length of 300mm say, and stretch it between two sets of pliers so the kinks drop out. You'll then have nice straight wire to make your links. Mostly these can be left uninsulated, but any links spanning more than say five tracks, I usually cover with silicone sleeving to make sure the link doesn't accidentally touch the leg of another component.
I hope the above helps - but if you need any more info, just yell.
Good luck
