Hello plebs, I am someone that did a BTEC and got into a top banking firm while studying for a degree at the same time.
So going from a BTEC student to someone that worked part time in a bank to also doing university part time with exams, coursework and actual real work going on throughout the week with no summer breaks at all and I have to say, I found it quite stressful doing 3-4 things at once.
You won't struggle, most of the work nowadays require you to put a lot of effort in, not for you to be a genius in something.
You will struggle if you don't put the time in though.