You have made solid progress. Congratulations, keep up the hard work.
If I were you I'd switch to a program that adds weight weekly or monthly, such as Rippetoe & Kilgore's Texas Method from Practical Programming, or 5/3/1, or another similar program. That will keep you adding strength for quite a while longer.
I'd consider switching up exercises, to gain the benefits of variety: mobility, strength in different areas, injury and burnout prevention. For instance, switch one or two days a week from back squats to front squats, or switch entirely to front squats for eight weeks. The same goes for deadlifts (try RDLs, snatch-grip deadlifts, etc.), pressing (vary bench, overhead, dumbbell/barbell, maybe throw in some Turkish get-ups) and so on. Be careful not to add to much weight too soon on new lifts, even if they're very similar. If you get antsy working with temporarily lighter weights, keep at least one heavy workout a week using the lift you're more experienced with.
I'd do one short cardio finisher for one to all workouts in a given week. Ross Enamait has some great material for metabolic conditioning, including his Magic 50 (5 rounds with 1 minute rest: 5 dumbbell snatches per arm, then 5 dumbbell swings per arm, then 10 burpees). I'm also partial to Glenn Pendlay's conditioning recommendations, which tend towards heavy kettlebell work for 5 to 10 minutes. Or, just run and do sprints.