Sure, that sounds like a good, simplistic plan that can work, but getting on the inside is the only problem. Wlad has immense reach and an amazingly effective left hand that is extremely hard to get past, so your advice of saying fight him on the inside sounds easy enough, its getting inside that is the big obstacle. You'll get your head taken off while trying to get inside.
its pretty easy to hit someone like that when the other person doesnt have any offense to keep you off