I've been a grand total of two times but I do my research!
My first trip we did us 5 in Port Orleans Riverside. My parents, me (17), DSis (19) and DSis (6) so I know where you're coming from on needing a bigger room but not going deluxe. They do have sinks outside of the bathroom and that helped us get ready faster. I also loved the theming!
My second trip was solo in September. It's hot but I live in California, what else is new? And I found the lines to be short and it was a great time! I'd recommend an early start, break time around 1pm for a nap or swim (lifesaver!) and then back out to the parks around 4/5pm. I felt like I got so much done. It's different now though because of fast pass plus.
Now I'm planning for my sister, BIL, niece (who will be 1.5 too) and myself. Stakes are high as it's my BIL's first visit so I gotta wow him!
2015 package rates are being released on July 30th (less than 2 days!) and yup I've been following the news about the renewal for the military discount and 2015 rates. My BIL is army so we are getting a great deal on tickets and hotel.
I do think 10 & 12 might be too young since the parks are much bigger than
Disneyland and they aren't familiar with them.
Hope that helps and have fun planning!
Check out pscalculator.com to find out all the important dates for your specific trip (180 days out, 60 days out etc) and allearsnet for the menus to find out your ADRs.