Get the Lee Aniversary kit. That is what I did and I also started out with the 7mm Rem Mags. It works wonders. I later stepped up to the Classic press to do all of the heavy duty work of FL Sizing and Neck Sizing. If mounted right, the Challenger press will do just fine. But for another $65 on midwayusa.com you will love the extra leverage.

Also, get the die set that comes with the collet die.