There is a dealer that does a lot of Brooks mail order down in Louisiana Wallingford Bike. They are experts at Brooks, have a fit guarantee. I suggest you call them tell them what you have, what you like/don't and have them suggest. Personally I waffle back and forth between a B17 and a team pro. Like them both, I wish my Pro was a flexible as my B-17, I would be in saddle heaven.
By the way, its the width of you pelvis not you weight that dictates the best fit for you, along with bike type and handle bar weight. The B-17 seems to be the most common good fit though.
Weather is OK I use Brooks profhide and have no issue, cover the saddle if its raining on it.