We had somewhat similar issue in the condo that we purchased 3 years ago ..... stupidly, the dryer vent is routed above the kitchen ceiling and in reality(wrongfully) tied into the half bath ceiling fan as well.
the amount of lint build up was beginning to scare the hell out of us as we were unable to properly "snake" the entire length.
Our solution was to purchase a "Vent less" Dryer/ washer combo ....... not the ideal situation but let's us sleep at night........... you mentioned that you had a new dryer on order - perhaps a good time to rethink the brand ?
https://www.google.com/?gws_rd=ssl#q...=1498043906156
p.s. -- We HIGHLY recommend the Bosch Stackable !!
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