The Rough Country kit comes with a transmission drop kit. If you're not going to use an SYE, I'd highly recommend it to avoid driveline vibes. (I do know two folks who have 4" lifts with no SYE or drop kits and have only experienced minimal vibrations, but that still tends to put a lot of unnecessary strain on u-joints and such).
You will need to make some mods to the shift linkage, and the instructions may not accurately fill you in on it. But, those of us who have used this kit can help if you need it.
As stated before, 33's will clear just fine. IMO, 35's would be pushing a 4-banger pretty hard without some gearing changes. But, that's up to you.
The Rough Country kit rides and flexes great, especially with the front sway bar disconnected (remember to get extended brake lines if you do!!). I did quick disconnects for $15 worth of hardware parts. It's noisier, but easier to disconnect and reconnect (IMO) than the store-bought kits.
Set aside at least half-a-day (depending on how much help you have) to install the kit.
Enjoy, and happy wheeling.