For very cold & very wet riding I can't really suggest anything. It's been a while since I've had to buy gear. I will simply list what I use and maybe it will help and maybe it won't.
Jacket/pants: Aeorstich one piece roadcrafter suit. Quick & easy, comforfable and as protective as any textile jacket & pants.
Gloves: Tourmaster Winter elite gloves. Soft, warm, flexible and comfortable right off the rack. No break-in. The built in rain covers also provide extra protection from the wind. It doesn't have to be raining, if it's really cold I deploy those covers and I get an extra few degrees of warmth from the gloves.
Helmet: Nolan 102 modular. I like Shoei more fit wise but their shield fogs up more than any others'. The Nolan has a large pinlock inner visor that gives a good field of view and is completely fog free. Shoei also has a pinlock shield but it is small. Quite small compared to Nolan.
Boots: currently Sidi waterproof (can't remember the exact model. They're mostly black but still a little 'racy' for my tastes). I used to be able to get Tourmaster waterproof boots for under $100 but now I can't find them for under $150 so I spend a couple $$ more on Sidi for the extra protection.
Silk baraclava or whatever those ninja looking things are called.
A windproof bandana from Aerostich that keeps the wind from entering the neck area of my suit & helmet. (this thing has become invaluable to me)
Aerostich three digit rain covers. I keep these with me when using my normal riding gloves. If it starts raining or starts to get really cold I slip these on over the gloves.
Electrics:
Aerostich airvantage vest. The cool thing about this item is an internal bladder that you fill with air via a tube. Not only does it make the vest fit snugg & tight like it needs to be to conduct heat to your body, the air itself acts as an extra layer of insulation and wind proofing. Zip on non-heated sleeves are available. Also they have a full liner version with heated sleeves. My arms rarely get cold so long as my core stays warm so the vest is all I usually need. I got the zip on/off non heated sleeves for when temps drop down into the low 30's, high 20's.
Heated gloves: Oxford heated grips (Sportz model) works great on the 250.
I realize this is a pretty expensive list of stuff and in all honesty, it took me over 8 years to acquire all this stuff. One piece at a time as I could afford it.
But it is all very worth it. I am a year round rider because of it. Through sun and rain and ice. No snow. Thankfully there is no snow within 100 miles of my corner of the world.