The catalog if fine, but has way more in it than you need. It would be easiest for you both if you just told him what you wanted and he can shoot you a quote. If you are not quite sure let him know what you are thinking at least and he can directly link you to a few options and prices which will help you out. He is quite up on what to offer it seems so just ask specifically and it will speed up your looking for sure
I order from him a lot and I never see the catalog as 95% is stuff I do not need, I'll just ask for pricing on specific things as I need it. I just emailed him on Monday afternoon my time and said "Hey @
milkisbad, how about sending me the price on 63 cameras of this model number?" He did, I said yes to the price and I got them early today. Easy lol.