Wolf is giving you the best advice you could ask for, listen carefully and follow every step! He's done more work on this one particular model than anyone you'll likely ever come accross. Only thing I'll add is don't use aftermarket parts, maybe a Meteor piston if you can save the cylinder, but...
Would you hire you without ins? Would you hire uncle Bob with a green poulan to take down a 2' diameter tree within striking distance of a structure? Would you want some references before turning someone loose on your property? Seems kinda irresponsible to do so, in my humble opinion. Home...
You would indeed need that as well to get certified for the license, and Insured. No ins broker will cover you without it. The experience part is why you would need a former clients list with recommendations. Hope that helps.
We have outdoor cats, haven't seen a mouse, mole or vole in yrs. We even had one cat that was deadly on rattlesnakes, saddly, the third time she was bit it got her in the mouth, used up all her 9 lives on that one. 😔 RIP, Shadow!