Thanks all for your advises again. The tripod in it's 190B version is one I rejected for use with my EOS3 (I bought a 055 instead, pretty stable but a bit bulky), but it should be fine under a TLR.
The 330F would give me a 2.8 lens that I miss sometimes when photographing in available light, plus interchangeable lenses and -may be- better close up
facilities (I use Rolleinars, and they are quite easy to use, not sure a Paramender would be as efficient).
The RB is something I lusted after for years, even before I even shot my first 120 film.
P.S. If I really consider my options and try to be serious, then I have the feeling I should 1) test Delta 3200 for real speed in X-Tol and be sure I use every ISO it can give me for the available light situations and 2) buy a light and stable tripod (Gitzo something) and make sure I always have it with me when I carry the Rolleiflex... Don't know if I'll be serious !