what subs for merlin vsm-mx

hi gang, since i last posted, i have opted against going with soundlabs. i have happily settled on purchasing merlin vsm-mx speakers due to the fact that i may have a chance to go for a house and do a real deal listening room (read converted bedroom) and the fact that i do not want to deal with lugging big gear( for now) i have been greatly impressed with press i have seen the tbi magellan VIIIsu passive sub get as of late. i am seriously considering powering it with a ml 33H:here is the planned gear list:

audio aero capitole cd player
stereo sacd player
grado statement phono cartridge
nottingham deco turntable w/ space-anna tonearm
w/ deco power supply
art audio vynil ref phono preamp
mac mcd205 cd changer
vtl 7.5 main preamp
1pair thor audio tpa-60 60 watt mono tube amps
1pair merlin vsm-mx speakers
tact audio rcs 2.2x (will only use on the subs)
1pair mark levinson 33H 150 watt mono solid state amps (will use on passive subs)
2x tbi magellan VIIIsu passive subwoofers
shunyata or cardas cables (undecided)

this is the planed setup. the only areas i am trying to review are the cables and the passive subs. any ideas for subs? and yes i will run stock electrical(untill i get to winter and sart the room revamp)