Try Mustang Connection in Armstrong for your filters and other parts and manuals:
http://www.mustang.bc.ca/. They are pretty close to you. I recommend that you invest in a shop manual. You will find that Lordco also can get you light bulbs, relays, etc at prices probably far cheaper than Toyota. Even if you don't have an account with Lordco, always ask for the account price and they will give you a decent deal.
Don't know much about your motor. However, if your glow plugs are working fine, it should start no problem after the glow light has gone off. Leaving the key longer in the glow position will not give it any extra glow, as the relay is timed.
I also recommend you do your own oil changes. I don't trust the quick change places. I have had too many instances of them over torquing the drain plug or not getting the filter to seat. By-pass filters are great inventions and will keep your engine young. My truck has twin filters - a regular $12.00 filter and a $40+ by-pass fliter. If you want to delay your oil changes, then get your oil analyzed at 5,000 kms. If it is still good, you might be able to extend the changes. Personally, I do it by the book at 5,000 kms. Also, I recommend the Seafoam oil and fuel system cleaning. Crushers has a number of posts on how well it works. It really cleaned all the **** out of my motor and sump. I did not do the fuel system cleaning, as I put in new injectors and the injector pumop was rebuilt. I do not recommend using cheaper Japanese aftermarket filters. I had tried them last year to save a few bucks. At the same time I had a problem with disappearing oil only to find oil dripping at the rear of the engine. With the Safari, once the filters are on, you can not see if they have seated properly. I feared it was a main seal, as I was always careful to make sure the the gaskets were oiled and the plates were clean. After the second oil change I switched back to the factory filters and my oil leak was gone.

You could also consider other name brand industrial grade filters like Cummin's Fleetguard. As also stated, buy good quality diesel oil. I am running Delo 400 and am quite pleased with it. It isn't cheap but it is the only oil which I found with the JASO certification - certified for the special needs of Japanese diesels.
Last word, get yourself a large diameter and large volume oil drop pan. My truck holds about 12 L of oil and I use a 16 L open face pan. The first time I dropped oil into my smaller pan it shot all over the place.

It had one of those 12" pie plate funnels which screws into the drop pan tank.