That Actron compression tester is a nice one for the price. As far as the impacts go, they are for disassembly only and the electric should be fine on your shee. It is nice to have compressed air to blow out carbs, clean parts ect. Do what your budget allows, I swear by Ingersol Rand pneumatic tools...but I make a living with them. For the do-it yourself guy at home the cheaper stuff is hard to beat. As for pulling your flywheel to do your timing plate, you're going to need a flywheel puller...rockymountainatv has them for @ $15. An other option is to have your dealership pull the flywheel for you, it would cost a lot less then buying all of those tools. It's your call, how much are you going to use these tools???