I've been digesting this post for a few days, as I used to be a fan of tech pan film. First, I am not in any way disparaging the film; it's a terrific film for the patient minded, which excludes me, but it is very difficult to use with consistent results until one has built experience with it. Its extreme flexibility is both its boon and its bane. Second, I think it's a much better film for smaller formats that inevitably suffer from grain issues. Obviously this doesn't preclude its use with LF, but emminently more controllable and predictable films exist (especially in larger sizes if that's the way you're headed) that are less expensive and have almost imperceptible grain. IMHO, the grain issue is moot in LF unless you're going to enlarge a way-overdevloped 4x5 HP5+ neg, but since you're going to be diving into Pt/Pd, once again this is not an issue. Without question the surest way to beat grain is to contact print (and develop correctly). At any rate you'll have a whole new type of grain issue (unrelated to film grain) to wrangle once you've begun to play with platinum.
I've been using almost exclusively Plus-X with D-76 for quite some time now. Is it better than anything else? Nope. I just know how to control it even for platinum printing. For a long time I've gotten advice along the lines of "you can really improve your negatives if you use this film or that developer or..." But, know what? I happened to be looking through a book the other day at some Kenro Izu prints, when I received validation. This most amazing printer also uses Plus-X with D-76. And I thought I was just being cheap...
I guess my point is, you can make it work for you most definitely, but TP can be tough.