Are there any clock makers, tinkers or hobbyists among us. If so, I require your counsel?

We have a mantle clock which has ticked along faithfully for better than 40 years. It’s spring driven (3 keyholes), strikes and chimes. Several months ago, the strike spring refused to be wound, so I lazily reverted to simply winding the spring powering the hands. Now that spring also defies winding, and I am trying to decide between 3 courses. I can:
1. replace the entire Hermle movement by ordering one online at a price of $368.00

2. I can ship the movement. away for a complete rebuilding at a cost of $225.00 or

3. I can attempt to tear down the movement myself and simply order 3 new winding barrels (complete with springs) at $30 each at a total of $90.

The downside to the 3rd option is that I know nothing about clocks. I just have a history of taking things apart, and reassembling them with fairly good luck. This time, I can see that this would be no quick fix. I will almost certainly have to build (or buy) a stand to mount and secure the movement, and devote hours to the project, but what else have I to occupy my time? Then there’s the additional fact that I might not recognize other factors in the dozens of bushings wheels and gears that require my attention. Does anyone have advice for me regarding the project?