Low weight, high reps for cardio?

Hi,
            I have been contemplating substituting high rep low weight 
resistance exercise for cardio workout, partly because I dislike cardio 
and enjoy resistance work. Would doing high rep deadlifts (5x25x50% 1RM) 
for example confer some aerobic benefit? Perhaps with a bonus of 
increased toning as well? Also several sets of press ups to to failure 
for the same effect?

                                                Thanks