Another thing I found is this amulet that allows you to carry more weight. I'm not sure how much I forget right now but it's a good amount
I love it because I only put it on when I start getting to the limit. Usually I use one for health then I put the weight one on. Currently with the amulet I'm at 375.
I have found an amulet with +30 to carry capacity.
Also, I think there is a pickpocketing perk that increases carry capacity...
Also, the Steed Stone (I think it is up north somewhere) gives you a carry capacity buff as long as you have that stone's buff (remember that only one can be active at a time)
I too find myself maxing out my inventory space easily, and look forward to the point where I can reasonably loot without having to shuffle through my inventory to find "cheap" items to drop. Finding and picking up the buff from the Steed stone helped immensely (I am thinking it is something like +100 to capacity...). I am nearly to the point I can take the pickpocket perk, so that will help out quite a bit as well.