A selection of Takumars at a reasonable price? Go for it! Provided you don't spend too much you can always sell them on if you really don't like them and you'll have benefited from the experience.
I've only got three (Super) Takumars, acquired with a Spotmatic in a local auction, and, to be honest I use them only rarely.
However, as others have commented, using manual lenses, especially primes (of which I have far too many), when you've got to "know what your doing" and put in a bit more effort to get the framing "just right", is totally satisfying