It's a little disingenuous for Morgan's demo to have options like Stage 1 and Blockleys... but anyway...
1. I wouldn't say Stage 1 is needed. Easy to break traction with the standard setup. But probably a nice to have! I'll consider one in a year or two I expect...
2. Heated seats might be nice - seems to be popular with ladies. Nice for Winter... although I find them too hot!
3. If ordering today I'd order the rear mudguard too. Also consider the front screen (or Fairbourne). And the dashboard with glovebox.
Good luck with the fun of the configuration!
Not quite sure why it is disingenuous......the car is a hire car, not a demonstrator.