You'll be just fine.

If I can get good sounds out of one, anyone can. Depending on your last rig, there might be a small learning curve. Within a week you'll be wondering how you ever stood to play through anything else.
The Pro Mods are different now, but compared to MY Pro Mod, the Quick Rod has less saturation, sweeter upper midrange and highs, and is more dynamic and touch-sensitive. The clean channel is obviously much better also. I don't know how much of those changes are due to the EL34s instead of KT88s, the additional clean channel EQ, and the different output transformers. FWIW the actual preamp circuitry is supposedly identical.