Wonderful thing about reloading choices these days is that there are so many components available. And in 7mm, you have a ton of recipes that do the job well.
I too have a newly acquired Vanguard in 7mm RM. I'm not loading for it yet, but soon will be. My choices are Federal 215M primers, Retumbo for powder, and 162gr Hornady A-Max bullets. If for whatever reason I can't get the A-Max's to shoot as well as I want them to at different COAL's, I'll change to another bullet and start over. But right out of the gate, those are my choices.
It's hard to discount Berger bullets, especially for long range work, but they are a bit pricey for me right now. So I figured for my purposes, the A-Max would make for a great second choice.
Before you decide on which powder (if only choosing one to begin with) take a look at the results that some folks are getting with Retumbo. At first it seemed that folks thought Retumbo would be a tad slow for the 7mm unless one was shooting 180 grainers. But thankfully some adventurous folks tried it with lighter bullets because some of the long range groups I've seen were impressive to say the least.
Good luck in your loading! I hope that you'll keep us informed of your load progress. I for one, would be interested to see what you settle on.