The 7RM deal you mentioned was a great buy, and there is no better choice for you as an entry level set up that would cover the gamut of western game from antelope to elk.
Of the two this is the way I'd go as well. With time I'd add a Ti take off handle and some Talleys and a Uncle Mikes Mtn sling. Good action, wonderful round and with all due respect to my elder friends from the Fire (Royce and Bob and Ingwe, thought I'd toss him in the mix just cause he uses a 7x) I really like the 3-10 Leo and it's one of my fav scopes going and one I could easily use for the rest of my days of hunting and shooting. (my 7 Mashburn Super has a 41-14 on it go figure...grin)
To me, the scope power issue is a personal one much like picking a woman for a wife. I'd buy the big 7 and then with time would change out the handle.
Just my way
Dober
