If you are onsite and booking FP at 60 days, you won't have any problems at all. Even if you are offsite and booking at 30 days, you should be able to get FP for those rides. They will be in the afternoon or evening most likely, but you will get earlier times if you pick the right days. For example, I can book Na'vi for 2:40 for a party of five on Thursday, Aug. 10, but on Saturday, Aug. 12, there are none available. On Monday, Aug. 14, which is AK EMH, the earliest time is 7:40 pm. And that's looking right now, at 12:30ish. If you are on right at 7:00 am for each day, you should have more of selection.
For my family, no, we would not ride any of those rides without a FP, but we like thrill rides. If you're not into thrill rides, I'd be willing to wait about 30 minutes for any of those rides.