Welcome to SRP!!

I don't know where you ordered your Dovo from, but be advised you may need to send it out for professional honing, as some of the vendors out there may market a razor as being "shave ready" but in reality it isn't. If you'll post where you purchased from, we should be able to tell you for sure.

As for the irritation, you may want to plan on having some off the cuff as you learn to use a straight. You can minimize it, however, by learning and practicing the techniques outlined here: SRP Wiki

Follow the beginner's guide and you should be shaving comfortably in no time!!

There is a learning curve, but it can be reduced drastically.

Any specific questions you have, feel free to ask... we're always here to help!

Again, welcome and enjoy the ride!