Winter woodstove prep

We bought our house last year and the #1 feature for me was a woodstove. I only burnt a couple cords of dry hardwood through it but am getting ready to burn a couple more this year. Should I hire somebody as a chimney sweep or find a way to clean it. I sent a couple chimney clean logs through it last year. I used to clean my dad's with him every fall with him on the roof and me at the clean out outside the house running a brush on a rope through. This house has a metal chimney that runs up 2 stories and about a 6 foot stainless chimney on the roof. What would you guys suggest? I don't have a clean out straight down like my dad's had.