I'll do a 5x5 program occasionally and my strength gains usually go through the roof. I dont gain as much size as when doing 8-10 reps tho, so I only do it once or twice a year for a couple weeks at a time.

If you look at your program, you're only doing 10 sets for your chest and 10 for your back a week. I really dont see how that's enough to grow. I'm not a fan of the upper/lower split. If I were you I'd switch to a back/bi, chest/tri, legs, shoulders/calves. Its still only 4 days but I think it'll work out better for you.

If you're feeling it doing just those exercises keep at it until you're not anymore, then up the sets. Are you fairly new to working out? Just wondering because thats a pretty weak routine.