I had been running a well used 044 with an 18" bar and a 25" bar for weekend firewood cutting until I had a top end failure last year. We were in the middle of a big job and I needed a new saw fast. Weighing all of the factors, I thought going with a new 044 was overkill for the 5% of cutting that I would use it, and that an 026 made more sense. Plus I was reluctant to pony up the $650-700 for a new 044 that the dealer was asking.
But after contacting a member of this site, I purchased a like new Walkerized 026 for $500. I was pleasantly surprised that it readily handled the 25" bar in hardwood and was four pounds lighter than the 044.
I ended up purchasing a top end kit from Bailey's for the 044 and new pin bearing from Stihl, and rebuilt the 044 for about $115. While the saw runs great, I rarely use it and am thinking hard about selling it so I can pick up a power splitter.
So my vote goes for the saw mods. For what you're looking for, it might be a cost effective alternative that addresses all of your concerns. Walker's has a deal where you can trade in your stock muffler for a modified.
BTW: When I do cut bigger stuff, I will occassionally have to quarter the rounds just to be able to lift them into the truck. I can easily do this with 3/8" chain, but my cutting buddies who are using .325 end up clogging the works and have to shut down to pull the curly fries out of the sprocket guard. I don't know if that is an issue for you, but just thought you might like to know that.