First of all, this telescope comes in 2 boxes: 1) the EQ5 mount box and 2) the telescope tube box.
The mount is magnificent. If you're not very accustomed to equatorial mounts it shouldn't be a big deal as you'll pick it up as you go. That's said, I'd recommend you look at some youtube videos on how to use and position this kind of mount. The stand is very sturdy and quite flexible.
The scope comes with two basic eyepieces: 10mm and 25mm. Also a 2x barlow, 2" adaptor. the 25mm EP is very good, but I would recommend that you seek an alternative for the 10mm EP. I had to buy a set of Plossls to go with this scope. It's a hardcore scope and deserves good eyepieces. You may want to experiment with the 10mma and 25mm first and see if you're OK with them first. But I have to say more eyepieces with better quality will make a dramatic difference in terms of view clarity and function... whether you're interested in deep space or planetary viewing.
Bear in mind this telescope is not easy to move around as it weighs around 20 Kg - including the stand and mount. The good thing though is that you can easily unscrew the tube from the scope tube and fit it back in.
I owned a 130mm telescope before, and having upgraded to the Skywatcher Exploere 200p...well, major major difference.
Unlike many scopes out there, this one comes with a very good finderscope - up to 50x. It doesn't feel cheap or low value...it just as good as the telescope itself in terms of material and optics quality.
If you want to take the next step in astronomy - this telescope is definitely the one for you. Highly recommended.