Gus, I've sold two lenses to you, and within months, bought replacement copies because I couldn't stand seeing images from them. So I'm just saying... Be careful.
Don't sell the Viv 28 2.8 CF, Don't sell the Cosina. You've done a lot to define that Helios to the Pentax community, you should probably keep that too.
Also keep the few AF lenses you need to get by, and then sell the rest. That 'clean' feeling is worth something too
I've sold:
31td
43ltd
40ltd
Viv S1 105 2.5
Voigtlander 180 f4 Lanthar
Voigtlander Nokton 58 1.4
FA 50 1.4
50-135
16-50
Jupiter-9
FA 28 2.8
Tamron 70-200 2.8 (but only because I bought sigma 100-300)
Many M's and Taks and A's
Several K's
I've sold, then
re-bought:
F 50 1.7
Cosina 55 1.2
Vivitar/Komine 28 2.8 close focus
Helios 44m
Tamron 28-75 2.8
Good luck bud.