1. I've got lee, rcbs, and redding dies. I would probably say I like rcbs the best. They are slightly higher than lee dies though.

2. For a hunting gun neck sizing is probably a toss up. Maybe a little better accuracy and extended brass life, but those may not be critical factors for a hunting rifle that gets shot 50-100 shots a year. I neck size my 22-250, .243, and .260 because I'm a little more particular about how they shoot. I full length size for my .223(AR), 35 whelen, .270, etc. They need to be MOD(minute of deer). Unless your only firing brass that comes from factory rounds fired in your gun, you will need a FL die to go with a Neck Die. What I mean by that is once-fired brass from somebody else's gun usually will not neck size and fit properly in your gun.

3. Lube, yes

4. Trim, yes, but for one rifle a cheap hand trimmer like a lee would probably work.

5. See #2

6. Try a dummy round (sized brass and bullet) first and make sure it chambers before you load up a batch. Get your son involved. Have fun. Be safe. This is not the gospel, but it is what works for me. Everyone has their on sequence and tricks of the trade.