Hi Lewis, I wouldn’t worry to much, it happens everyday, Atc will be used to it, plus they will no its your solo x/c,
Radio will come with practise, I done my PPL out of Bournemouth which is controlled airspace, when I first started I was rubbish, but over time it get’s better and now I have no problem’s.
Course you will be nervous, but once your up there them nerves will disappear and you will enjoy it.
If it helps write out everything on your kneeboard so when your up there you will have half an idea what to say if you mess up.
Don’t worry to much what the ATC will write on your bit of paper, providing it’s a half decent landing you should get a satisfactory or a good remark.
When I did mine I flew to Bournemouth to old Sarum then on to Exeter, back to Bournemouth.
Good luck and let us know.
Cheer’s, Adam.