I may be wrong but I don't think you'll get all that from one of these old 50mm f1.4's.
I'm tempted by the 50mm f1.2 and 35mm f1.4 but I really don't like the bulk and weight of these lenses and feel too self conscious point big kit at people and things. A more compact way of getting wide apertures and nicer bokeh could be to look at the f1.2 E mount Voigtlanders but these are obviously MF. I have the 40mm f1.2 which was the first one they did but they're since brought out the 35 and 50mm f1.2's and now have SE (Stills addition) options which lack the declick option to make them a touch more compact. If these had all come out at the same time I don't know which I'd have gone for but I think it's worth restricting yourself to just one
In your place and if AF speed isn't an issue I'd take a sideways look at the Voigtlander 50mm f1.2 SE. It may not give you quite the smoothness of bokeh as the Sony 50mm f1.2 but it's a fraction of the size. There's a massive review on Fred Miranda, actually he's reviewed all these lenses as has Philip Reeve.