Advice on servicing vintage Seamaster

Greetings,
I'm thinking to send for service this 1978 Seamaster with integrated bracelet which I've owned since new (my first Seamaster).
I believe the model is ST 366.0858/166.0251/cal1012
The watch runs but very fast.
I'm seeking advice on:
a) Do people here think that parts for a watch this old are available and worth attempting a service?
b) Is it better to leave the watch undisturbed with blemishes, dings and all or go for the "renewed" look, with polish, etc..?
c) The minutes hand on its left side has a very tiny chip of the orange frame. Is it worth replacing it with a new minute hand with the risk of the hand looking too "new" for the rest of the watch?
I own a few other Omegas, I'm not new to the brand. The cost of service is a bit "alarming", while I respect the work that goes into it, and I hesitate on a watch this old.
I'd appreciate advice and ideas on how to approach reviving, or not, this classic.
Thanks much.
(note: I believe I had the hands replaced already once with a service many years ago but can't recall exactly)

The questions you're asking are, ultimately, entirely personal, but, if it were my watch, and I enjoyed it and wanted to continue wearing it, I'd just get it serviced. The questions about refreshing/restoring/polishing it, are, again, entirely personal and a matter of taste. That said: as shown in the pictures, it certainly doesn't look abused in any way. Omega will have the parts to service the movement. Regarding the minute hand: again, totally personal. I don't find it distracting, but ymmv.

The biggest thing would be to find a watchmaker with an Omega account, so you know genuine parts will be used. If you don't already have a watchmaker you frequent, sharing your location will help folks offer suggestions (if you want). It's a beauty; best of luck regardless.

Thanks a lot guys for the feedback and collective wisdom. Good points on finding a service with Omega connection. I am in the US, Boston, I know of a service pro in Seattle (Nesbit's) that may do the work, I'll contact them see what they say.

Good suggestion, thanks.

If you're up for something less corporate, I take every chance I can to sing the praises of Donovan Paradise, in Kendallville, IN. He runs Paradise Time Service, and in a dozen years, servicing literally hundreds of watches I've brought in, I've literally never had a problem. He is as good as it gets, is CW21 certified, has an Omega account, and is precisely as demanding and fussy as you'd hope a good watchmaker would be. Couldn't recommend him enough, and, only because I was there a few days ago, I know he's got capacity right now, so it wouldn't take too long.

Great reference, I'll reach out to Donovan Paradise, thanks.