Good choice!
This was one of my very first builds and it was a superb kit!
OOB it built up very quickly due to low parts and it all being pretty straightforward but you should have some fun with it with your extras.
I'd love to have another go at this kit with the PE and an AM barrel / tracks now that I've learnt a bit.
I seem to recall two things to watch out for - the joint seam where the barrel halves join and the plastic 'rim' which fits over the mesh at the rear - mine wasn't wide enough and I had to slice it in half to make it fit then fill the gaps - it was only too small by about 1mm. Perhaps it was just me at the time!
Best of luck,
ATVB
Ben