Wotcha and welcome - that is indeed a clean example - we have quite a few members on here who are pretty keen on detailing their motors so you are in good company
I cant see the picture - mind you i am on tappity talk anx my lack of social media skills are fast becoming legendary - hmmm or a running joke not sure
Lovely motor - pity you have to sell but sometimes these things are a necessity - I hope it finds a good home as someone is going to get a peach of a motor
Wotcha and welcome - sounds like you have a well cherished example - but of course we dont believe you without photographic evidence ;) :D
Exhaust you have a few to choose from with varying cost and sound. From what you have initially said it sounds lihe the 'longlife' option might be good for you - stainless steel life time guarantee wont be too loud or can be made as quiet as you you would like. I cant remember if you have x2 cats on your motor so you may be able to remove one and be fine.
I would suggest though if you are looking at changing the exhaust - put in a hi flow (non oil) panel filter at the same time and get a rempa to match everything up - that way you will get improved mpg due to the engine performing specifically to the changes you have made.
Your car should have a recirc valve on it already so just change that for an external vent if that is what you fancy - forge do a quality item as one option
Use of bike rack on a hatch previously rubbed the paint - might have bee down to me not fitting it correctly but i would be inclined to go for the roof bars instead?