Firstly, happy to help anyone a bit... and feel free to offer to pay me to set one up for you!
This is the set-up that I decided on.
http://www.wcthompson.net/journal/ (I am still working on adding pages and going back through old photos and walks, so the australian bit is very unfinished but the rest is about what I am trying to achieve).
1. I have my own URL.
2. I use dreamhost.com (I have done for years), they are reasonably priced, have unlimited storage, and they have a lot of one-click software installs, such as wordpress (so 2 clicks of a button and I have a wordpress site installed on my own URL - that was the easy bit).
3. Modifying Wordpress to suit your own purposes is a bit more tricky BUT a lot easier than doing it from scratch with HTML/CSS (in fact I designed the layout of this site 5 years ago and spent a month working on getting the code almost correct, but there was a lot of fiddling. I achieved pretty much the same layout in a day of work with wordpress). It does require a working knowledge of how CSS controls a webpage if you want to do anything more then basic modifications to the site.
Wordpress is a blog, but it is very very simple to make it behave like an ordinary website, giving you the best of both worlds.
My system is to upload journals to a particular day (which I think keeps it organised). So technically you could just read through the blog section of the site. But then I relegate the blog to the backend and use custom pages on the front. So for example: For my NZ trip I have a parent page "NZ 2008" and that links to three pages "Routeburn 2008", "Kepler 2008", and "Hollyford 2008", and then each page links to the relevant daily journal entries. This has allowed me to upload the daily entries, and then (in theory for the future) return at a later date and pull them together into a nice easy-to-navigate front-end.
I am not happy with a few aspects (ie the add-ons that control the photos are not as good as I want so I am looking for a better one), but largely it is perfect.
Please, feel free to ask questions and I will do my best to answer them and help you understand everything about it.
PS. Happy to do a bit of a "how to build a webpage for your trips" tutorial if there is an interest.