1 Load Balancer + 1 Traffic Shaper/Squid. Which machine needs to be beefier?

[stramato]

I got this setup now and i'll be moving into live testing in a few weeks after i got new hardware;

(wan1) –--
(wan2) ---- [pfSense Load Balance] –--- [pfSense Traffic Shaper/Squid] –-- (local network, 500 max users)
(wan3) ----
(wan4) ----

Question, does the Load Balancer need to have lots of RAM and processing power too?

Or is it just gonna "feel" like it's receiving a single connection from a single machine?

[Guest]

Load balancing doesn't require much at all in terms of resources.  Squid, however, is a memory pig.  Plan your HD and memory allotment accordingly.