there are a few good pipes in the range you need, fatties being pretty close. i would jump strait to a 4mill build. it's about 1200 to get it done with all the porting, pistons, 4mill domes and crank...... likely want an aggressive trail, mx or dune port. 33's will do better than the 35's.
as for the grease zirc, it is a good idea, however, you have to remove the plastic pieces from the bearings so that grease can get in there. also a good idea to do the swingarm pivot, too. rust can chew it pretty good