Nice one, you will certainly notice and enjoy the changes
I tend to steer newbies away from going all out with the mods, especially if they've only recently bought the car. Mainly because I was underwhelmed with Stage 2+ vs Stage 1 on my own car, and I don't like to see people wasting their money. Life is expensive enough as it is!
Stage 1 is a huge change over standard, and that's with changing absolutely nothing except the map.
Stage 1+ I guess you could call it, would be the intercooler and pump internals, just to keep the midrange punch consistent all year round.
Stage 2 and Stage 2+ give comparatively much smaller gains vs Standard to Stage 1, but the real kicker is it costs a sh1t load in hardware to run Stage 2+. And Stage 2+ increases the noise levels significantly because of the bigger exhaust and intake, which is something that can get on your nerves if the car is a daily.
I dropped back down to Stage 1 Revo on my ED30, and even on mild boost (Level 6 of 9 in the boost settings) the traction control light flickers in 4th gear on a damp road. Everything standard, even down to the paper air filter. Stage 2+ pretty much did the same but didn't feel
that much quicker, and just made a whole lot of annoying noises to go with it.
As you're getting a Revo tune, I highly recommend you pick up an SPS switch to go with it. You will need that to restore the performance map if you ever disconnect the battery, and you can also adjust the tuning yourself with it.