putting in a new master bath with toilet, shower, and lavatory that will serve as the wet vent for the entire system. i have the 2" lavatory drain at the start of the run, then downstream i pickup the 2" shower drain, then finally end at my toilet with a 3x3x2 combo with the 2" oriented horizontally back toward the shower and lavatory drain line. the water closet has the 3x3x2 combo below and then runs (immediately) back into an outside where it drops into the 3" stack down into the crawl to tie into my 4" main branch out to septic. my question is whether or not this will work with the 3x3x2 combo oriented in this manner? is this ok in ohio? will it siphon my shower or lavatory?