A point that hasn't been discussed in this thread, but came up in another one is that the Dayton MK442s are 4ohm speakers. The Harman Kardon AVRs have historically run hot, so you may want to consider higher impedance options to keep the current down.
Currently, Harman Audio is running a special on Infinity Reference speakers:
The Reference 152 and RC252 will outclass the Dayton MK442 if you use them up front and have 8ohm impedance.
If you don't mind breaking budget by a little, Infinity RC252 + 4x R152 + SUB-1200 would be $555 and would have better sound quality than the 5x MK442 setup.
OTOH, since surrounds don't need to be great, even inexpensive 8ohm Dayton B452s should do.
If there's any urgency to get it done sooner than waiting for the backorders, all of the speakers mentioned are in stock, and the Infinity R12 subwoofer is on sale as well for $179.
That's $584 for an all-Infinity setup, or $479 if you use Dayton B452 as the surrounds.
While the price on the Infinity sub is great, I don't know that the R12 offers the same value compared to the SUB-1200 as the speakers do compared to the MK442s.
The SUB-1200 reaches down to 25Hz, while the R12 only to 29Hz. At PartsExpress, the SUB-1500 (150W RMS) and BIC V1220 (200W RMS) claim 23Hz for $200.
The other nice thing about the Infinity sale at Harman is that there's a 30-day risk-free trial, where they pay shipping back if you change your mind, even on the heavy subwoofer.
Originally Posted by Toe
Hi there! Sorry for the late response.
Unfortunately I havent been able to listen yet as both the speakers and sub are on backorder. Speakers until the 20th and the sub until July 10th. Will report back when they come in.