Spelling will be the least of New Scotland's worries ... been distracted of late.
Our new currency should be called "The Pint"; say it in the right kind of under-class Scottish accent and it sounds a bit like "The Pound". Has the advantage of being directly translatable to a barter system when the (inevitable) time comes; also makes beer inflation proof. That alone should be enough to make me the First Prime Minister of New Scotland

70/80 would be a bit like the Pound/Guinea thing from Austen's days, meaning we would need to change the primary numerical system from base 10 to base 9; handy for those with fewer than 10 digits to use

So counting would go something like 70, 80, 2 pints ...
I tend to agree with the nay sayers, not because I am English (Katie and I worked out we've now spent more of our lives in Scotland than England - getting old!) but because I believe less government per head of population results in more-or-less the same value at lower cost. It's hard to see how we could have a smaller government than we currently do - they're not going to take independence and then fire 50% of the MSPs - more like it will grow to accommodate all the new services they must manage and provide. We may find that we still have 10% of the population (25% of the working population?) employed in the new public sector ....
So what if it could work on paper - why bother - realistically since the Poll Tax fiasco, what harm has the Westminster government really foisted on soley Scotland - sure they made some bad decisions and the odd good one, but that'll be the same afterwards - nobody has deliberately voted in duffers nor would they in any new scheme.
As to the PH article, I won't miss the financial service sector - England or Europe is welcome to it - though actually I suspect we have what we need to service our own needs, and if we don't we'll soon acquire it. It is a shame we don't have more industry than we do, but I think we have a lot of small industry (admittedly a lot to do with the oil industry) and with the right focus Scotland could become an exporter of high tech equipment/services. All of these things could also be true with Scotland in the UK.
The question we should be asking is not do we want independence but what are we going to make or do that the rest of the world wants to pay us for ....
Cheers,
Robin