You have to do it, otherwise you will regret later

I can tell it is your passion to make a timing belt change. SO you have to do it, otherwise, all the time
and energy you spent will be wasted and you will regret anyway.

I did timing belt change on my Nissan Pathfinder 3 years ago. At that time, I was very inexperienced
and dare not to touch anything as you are now.
but After I successfully changed it with a lot of
time spent on research before it, the pleasure and confidence I got is unsurpassable.

DO IT, DO IT, DO IT

If you are really afraid of something screwed up, you
can pay a experience friend by looking at what you doing. Worst case is you ruin your car, what's the big
deal, it is just a used clunker.