Thanks for all the replies, and sorry for my own late response.
I get what you guys mean, for sure. I do actually have research experience in my field, which isn't the normal case in the humanities, and was simply vacillating on whether to go on to Honours for its extra year (i.e., on top of however many years to come). I do say 'was', because I know it was a bit of a capricious uncertainty than anything else. I likely will. It's definitely not reluctance to do a year of research, but rather the opposite; my projects are somewhat larger than a one-year thesis. Either way, I should add more importantly that, yes, applications are due in around October to December, but as I mentioned, I do finish my undergraduate around June, and so my Honours year grade wouldn't be ready by then if I were to start it in August.
It's nice nonetheless to have perspectives as to how much it counts, so thanks!