i) In general, German cars have 1 litre between min and max (and Germans don't bother topping up until the oil hits the low level, when they pour in all of the 1.0 litre of oil that they keep for this purpose). I'm not saying that this is a desirable way of going forward, just that its the way it is done in that culture. (And you can see a trace of this in the manual where they talk about topping the oil up once. This isn't totally meaningful if you don't know what volume that is...not that anyone takes much notice of that )
ii) With the dipstick (and I agree with you), you could try rolling it on to, eg, kitchen towel. If you are careful you can get a good idea of the oil level that way, although it is a bit stupid and not the most accurate thing in the world; Hey, design a part with really one function! Oh yes, everything works perfectly apart from reading the oil level, which is the one function the part was designed for. Ok, OK, I'll take that back, it was also designed to fit it a hole, but that shouldn't have tested the designers all that much.
iii) Again, in general, you are, these days, you are warned not to over-fill the engine with oil. This is because, if you overfill the oil, there can be excess oil consumption, as the oil is burned off or goes through the breather system. This 'excess oil in the exhaust' can cause damage to catalytic converters and DPFs. Don't have those? Then it is less of a problem, unless you grossly overfill the engine, and the crank is splashing through it, worsening fuel consumption.