I'd say it's worth bleeding the system, to see if that improves things.
My master cylinder showed as a low biting point.
The slave cylinder is concentric and comes complete with the bearing, and it's a gearbox-off job to replace.
Mine gave up in spectacular fashion, dumping all the clutch fluid, and leaving me unable to select gear. About a week before I got a noise and notchy feeling when depressing the clutch.
If it's an original clutch, then worth replacing it whilst the gearbox is off too, depending on your funds