Re: 7 mm dies and brass??
Cabelas and cheaperthandirt have nosler and norma 7mm rem mag brass in stock. Norma is very good stuff and I think they make nosler's brass too. Powder valley, sportsman's warehouse, and cheaperthandirt also have remington and winchester in stock. It's not hard to find 7mm rem mag brass right now. Look on gunbot.net, they list quite a bit of it. If I didn't want to shell out the money for the norma/nosler I'd probably just go with remington, I've not had any problems out of their 7mm rem mag brass.
Forster dies are very good, the benchrest full length set should do you nicely. The ultra micrometer set is nice but is the exact same thing as the benchrest except it's got a micrometer head. The micrometer is "nice to have" but doesn't load any better ammo, it's just easier to make seating depth adjustments with.