There is no perfect raingear. If you ride in the rain for more than about twenty minutes, you are going to get wet, either from rain or from sweat, or both. Even with a $200 breathable rain jacket, you will get wet from sweat, but it won't be as much sweat as you'd collect with a $100 rain jacket. The best you can do is a Showers Pass Elite rain jacket, those Rainlegs, waterproof shoe covers worn UNDER the tights (with shorter socks that don't go as high as the tops of the shoe covers), neoprene paddling gloves, and fenders with the longest mudflaps you can get. And maybe a helmet cover, or at least a cap underneath the helmet. I wear all of the above, except for the Rainlegs; I don't mind getting the legs wet. Some variation of all this is pretty much the norm in the Pac Northwest, where it rains most of the time. If you want to ride a bike up here, you have to enjoy riding in the rain and getting wet.

Now, having said that, there is one system I used back in the 80's, and that's to use a Rain Cape. This is basically a huge waterproof poncho that covers your upper body and thighs. They have loops that you put your thumbs thru, so it covers your handlebars. Because it doesn't cling to your body (it's like riding in a tent), air flows freely underneath the poncho, so you also don't tend to collect as much sweat, or if you do, you're not so much in direct contact with it. The big disadvantage is that it is very non-aero and is adversely affected by wind gusts. I had one (it was made by cycling traffic engineering guru John Forester) and I bought it with cycling "spats" (shoe covers that went up to the knee in the front). As I recall, this system worked pretty well, but it did have drawbacks. Something you might consider, if you can find anything like it today.

Luis