Set up tools- There are many...from cheap to wth.
If you want to keep things really cheap then a bit of measuring with some string, a ruler and protractor will do the same job.
Thread lock- I do not use it on my own cars...but I have a bottle of this (http://www.modelsport.co.uk/zap-tech...products/14329
) that I used for someone else....seems to do the job. If that is not available in your country then search for the blue variety. Also worth mentioning that you only need the smallest dab of thread lock...I apply it to screws with a pin...too much and it can be a pain getting them undone when you need to.
As you mention there are alternative measures to stop things getting loose...lock nuts...split washers...serrated washers..etc.