Keystoker koker questions

OK first off let me say switching to coal was the best move i made!!
I have had it for 1 1/2 heating seasons and i love it but...... i am sick if trying to change air filters on it
The problem is i have a dusty dirt floor so i have to tape the crap out of it so my idea is to run it into the oil furnace cold air side and then i will be able to use that easy to change filter so i need help (pics) and how do i prevent it sucking the hot air from the other side?
and i would like to get rid of the power vent and run it straight up the chimney so what do i need for that ...
hear are some pics

R2D2, is that you?