I am in the initial planning stages for a new fork. I'm currently riding a bike with a 1" threaded fork & headset and a quill stem. I want to achieve two things:

1) Switch to threadless so I can more easily experiment with stem length and handlebars
2) Reduce the trail on the bike from 74 to something lower.

I have found a Dimension fork that is very reasonaby priced, will accept my cantilevers and will reduce the trail to 63. Based on my research the following will need to be replaced:

1) Fork
2) Stem
3) Headset
4) Possibly shims so a 1" steerer tube can utilized 1 1/8" stems.
5) Spacers

If I haven't missed anything major, I'm thinking I'll have an LBS switch out the headsets and then do the rest myself.

Is the process as simple as it seems? Have I missed anything major here?

Regardless of whether I replace the fork, I will be buying a new stem, either another quill or a threadless via adapter. I figure if I can replace the fork for not too much money, I'll just go that route.