I think when putting 2 subs along the same wall, it might be best for them to be the same, however, these two may play nice. Opposite walls might help even out peaks/nulls in your room. When my two 350's arrive I'm going to spread them up front next to my 80's, then first try my 600 to the left of my seating area.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85