Hi JLewis,
I have made several pepper cheddars and pepper jacks, I have aged mine anywhere from 6 months to 1 year without issues. In a 4 lb cheese the amount of peppers/pepper liquid you used I would not worry about it losing the pepper flavor, you should end up with a pretty spicy cheese. If you want to kick up the spice, when you boil the peppers include the seeds and membranes. If you do not want the seeds in your cheese, cook them first, then strain and re-use the liquid to cook the peppers. Nice looking cheese with a nice press. Let us know how it turns out in the long run.