Great, you will love the improved performance and ride
205/50/15 would likely be a better fit as possibly closer to stock diameter, the 225/45/15 I run, which are good on an 8" wheel though mine are 9" wide, are 23" versus the 23.4" of the stock tires.
The right 205 on an 8" rim is a great way to go though depending on the tires you choose and the use of them you may want to go a bit wider.