I used to carry a set of PLCE webbing comprising 2 utility pouches, and 3 water bottle pouches, with corresponding belt and yoke. In this I could get bivvi bag, tarp, water bottle, crusader, second water bottle, and a pouch full of food. Everything apart from my sleeping bag, which fit nicely in a PLCE side pocket with a sleep matt bungied to the side. I would wear this with a Berghaus Vulcan over the top (with the side pocket attached to it). It was a good way of carrying stuff, but I found it meant I was carrying a lot, and had the manoeuvrability of a small oil tanker... I got stuck in the ticket barrier at a French metro station. This is worth thinking about if you are likely to be trying to get through small spaces. With webbing/belt pouches on you can't even turn side ways to go between those two trees.
Something to think about before you put too much money into belt kit.
These days I have 2 pockets integral to my backpacks waist belt, which contains a first aid kit in the left pouch, and cards, keys etc... in the right. I then tend to have a saw on my right hip on a separate tool belt.
Hope this is of use to you, what ever you go with, do upload pictures and tell us how you get on.
Julia