I'd be concerned that the "center lift point" even exists on your car - perhaps the tub is not reinforced in those locations for a European car.
There are bottle jacks that have a built in jack stand, but their minimum height is way too tall for a 4C.
For the rear, you might be able to purchase and install the 4C Lift Kit from Inokinetic. But we've found that Australian cars don't have some of the required structure for this, so it is likely that the European ones are missing that as well (maybe someone here knows for sure).
You would probably be best served by purchasing a hoist such as the Quickjack or EZ Carlift. These will both lift and support the car.
Otherwise, you might need to go "off label" and raise the car from non-sanctioned lift points. There have been suggestions (I'm not advocating that this is safe to do - attempt at your own risk) of putting a 2x4 under the edge of the tub and lifting each side of the car from the centre that way, then lowering it onto jack stands. There are photos (and I think a video) of this being done, online, but it's up to you if you want to try it on your own car. Definitely don't just place a jack anywhere and start lifting, though!
This might help???
Working on a car can be dangerous when it gets lifted. We like to place our cars securely onto floor stands whenever we need to get under...
sector111.blogspot.com
Or this (again, I'm not advocating it but maybe it provides you with some ideas):
