Hi, I'm considering to order a Titan speaker set for my 70" Led TV based HT. I know that ideally the LCR speakers shoud be the same but there's no way I could accomodate the TV and a central channle based in a full Titan ( waveguide over a big 29" cabinet). I could fit the combined waveguide flanked by two smaller than 15" speakers at the sides. Any suggestion for the two woofers? Size? 10" would do? Thanks for any suggestion.