Subwoofer in a riser for home theater  

I am new to DIY speaker building and want to start out with a subwoofer to get my feet wet. I am also planning on building a home theater also and thought about the possibility of building my subwoofer into the riser (platform for seating to go on). Does anyone have any thoughts on this? I would also like to put in some tacticle transducers (sp?) in the riser - probably Buttkickers. Would this adversley affect the performance of the subwoofer (i.e. too much vibration)?