Hi and welcome

Not sure how much it costs to replace power steering, but if it's the pump, rack, etc, then there are plenty of Coupes being broken on here if you need spares.
You don't really need more than one key, but if you ever did, it's the red one that's classed as the most important, although this can be bypassed too.
As the red key and another key are available, you don't need any more, but if you did, a local key cutters will clone a key for you for around £30 and you won't need to go to Fiat for it to be programmed in.
If there's only these two problems, then yes, for £1450, the car is worth a look

Don't forget to read through this forum and check out the buyers guide etc too, as it'll help you know what to look for and ask.
As for the broken down Coupe, that was sparkyman

A long time owner of a gorgeous Coupe and a fantastic person to know

They were all on their way to a car show.