I clean my stove pipe every May.
Then I put a screen over the top of my pipe so red wasp, dirtdobbers, or a bird happens to get in the pipe.
It has a raincap, but still bugs or birds could get in.
The further away an elbow or pipe is from the stove, you can expect ash/soot to collect there.
I have a 90 coming off the back of the WonderWood, then another 90, then straight out the wall with insulated pipe running thru a metal boot, then another 90 going up the side of the house. Then I put 2 brackets to hold the thin pipe.
That 90 on the outside is where I get the most collected ash because it's cooled down by that time, and stuff falls back down the vertical pipe back to the elbow. I use the thin wall cheaper stuff on the outside and replace every 5 years or so, or as needed. And I don't use those elbows that can be twisted to make fit, those tend to leak and are not as stout as a solid elbow.
I'll take down the vertical pipe, and tap on it with a rubber hammer, then scrap out the inside with a 2x2 with an old wire brush duct taped to the end. Same with the horizontal pipe, but it don't collect much since the heat is much higher and burns off most of the creosote.
That's lots of wood you got worked up.
I look at wood like ammo, can't ever have enough..but room for it is always an issue.
I'm looking to buy one of those cheap metal carports for a new wood shed.
If gas ran out, I have crosscut and bucksaws, mauls, and axes.
Eat it up, wear it out, make it do or do without.