I agree with everyone else. I lifted seriously before I started cycling so I might be able to help a little more since I've got that background.
1) We need more info as to how much you're eating
2) Need more info as to your other workouts
3) If you want a good to serious cardio workout 10 miles is nowhere near enough. I would say 50 miles and up is more reasonable. I also understand work/time won't permit this...
But! Depending on your lifting schedule you might be able to swap time. Many lifters way over lift, or don't allow for muscle growth after a lift. If you can do say a very hard lift on Sunday (bi's, tri's, chest, ?), Mon=Rest, 100 miles betweenTues/Wed, hard lift (shoulders, back, core, ?)Thurs, 100+ miles Fri/Sat, you would get lean and buff pretty quickly. Obviously alot depends on your diet as well. Consecutive cardio days really help to get the metabolism cranking.