Is Renton in Terry Love's service area? I think it is. If so, you can order a toilet from him and have him install it. If I had Terry in my area, that's exactly that I would do, even though I have now installed multiple toilets myself with his Internet help.
Assuming that you have a standard vertical-discharge toilet on a 12" rough-in (the distance from the finished wall to the center of the bolts holding down the toilet), you have a lot of choices.
If you want a good, reliable, excellent-flushing toilet, for basically the same price as the Champion, look no further than the Toto original Drake, CST744S toilet, which Terry sells for $249-ish. We have two of them and love them. The Toto is going to have much better quality than the American Standard Champion, flush better, be easier to fix when the time comes, and operate quietly and effectlvely. You can look at Terry's Consumer Toilet report in the link above, and see the zillion complimentary reviews of the original Drake.
I would just give Terry a call tomorrow at the number above and discuss your needs with him. He is one of the best-known and most-respected plumbers in America, sells literally hundreds upon hundreds of toilets a year, and, lucky you, you have a chance to actually enjoy the quality of his knowledge and service.