Congrats! Soldotrna is nice. I live in Sterling only 10 miles to the north. My boys have been out of school a couple years now...but there are a handfull to choose from depending on your kids' grades. I believe there are 2 elementary schools, one junior high, and 2 highschools within city limits. There is the Kenai River that runs through town...so there is boating and canoeing there along with the mass amounts of salmon that run up each summer so fishing is big here. Soldotna is centraly located on the peninsula (sorta) and there are many trails to hike, lakes and rivers, fishing, hunting, skiing, snowmachines, or just driving and sightseeing. It might get 20 or 30 below once or twice in the winter...but never for more than a day or two. Here's a couple websites that may give you more info.
City of Soldotna Online
Visit Soldotna~Alaska's Kenai River City