Precision 3561 and other Dell Docks

Hi there

I am looking at getting a Precision 3561 and am wondering about which other docks besides the WD19TBS might be suitable. My displays are both Dell, 2208WFP and E228WFP, so nothing flash.  It looks like the WD15 might work, but the laptop isn't listed on the compatibility list.  I don't really want to wait 3 to 5 months for the WD19TB or WD19TBS to become available (both seem to be out of stock in all online stores in New Zealand - chip shortage?).

Basically, just need network, the two monitors and the dock power button to all work, then I'll be happy as Larry.

Thanks in advance
Paul