Am I in over my head for a do it yourself project?
Probably.
Pillar bedding is not that dificult
if you have the necessary tools and equipment. A mill is extremely helpful. I would highly suggest you let someone with the knowhow and equipment to do it properly. I wouldn't attempt it with out a mill. It just makes it so much more precise and so much easier to do it correctly.
More poeple get into trouble with these "do it yourself" articles in magazines and either completely mess something up to where they have to buy a new replacement part(s) or figure out they can't do it and end up costing them two or three times as much money when it's all done.
And I would like to add a bigger more thick recoil lug (I think thats what its called) and a new trigger.
For this you will definetly need to take it to a gunsmith. The barrel will have to be removed from the receiver and the torque shoulder must be machined back in order to fit the larger recoil lug. If you want the lettering on the barrel to be back where it is suppose to be he will have to machine back the breech of the barrel and rechamber your rifle to get headspace.