"agencies you may well need to maintain the standard we all currently have."
Not sure you'd have half of those if you started with a clean sheet of paper.
So what would the Royal Scots Airforce look like:-
1 Business Jet (European range only ) for Ministers
1 squadron of F-16's (very cheap) or Gripen (effective and Nordic) for notional QRA
6 medium sized Fishery protection aircraft
24-40 helicopters (medium) - something that the guys at ABZ can maintain easily - for the Scots Army
6 air-sea rescue helicopters - maybe go for something big here