Just bought a NoPinz TT suit on ebay along with shoecovers. They look very nice.
I got a 70mm stem for the TT bike, and I took it out for about an hour last week. Much better position wise, and I wasn't shifting around in the seat at all. I did crack a knee cap the first time I stood up, so that's not optimal. Also, my elbows are so close together that I really can't turtle or get my head/shoulders lower on downhill sections where I typically ease up and try to tuck a bit more. I'll have to try and experiment a bit with that and may need to lower the pads 10mm or so...Not sure.
It's so cold and windy, but will hopefully have some better weather soon to give it a real test at full-intensity. It's tough to go too hard wearing 10 layers of clothing that I know is flapping all over the place.