Thanks for all the advice. I ended up going with 4 Seasons heater and evaporator cores. I'll report back with how it works out for me. I was considering the performance radiator's heater core, but I saw a post on here of someone who said they've replaced 2 already. At this point, I'd rather have slightly subpar heat than replace the heater core again. Also, don't want to wait for, and shovel out $300+ for Brassworks.
I ordered a Denso condenser before realizing that I actually needed an evaporator. I'm deciding what to do with it. Returning it will cost me $16 for shipping.