I see lots of videos of people having a ''Format as internal'' button, and why wouldn't it be a good idea?
I thought you meant something else by "internal". Lately I haven't been playing around with Android as much as I used to but I have vague memories of forcing critical system stuff onto the MicroSD card on my rooted Galaxy S3 with a custom ROM and having all kinds of problems.
In general, your MicroSD card is way worse in terms of performance than the phone's internal storage and it also degrades faster under intensive use. This is what I meant, but anything a stock (non-rooted) device allows you to do should be fine.
That said, I did some quick googling and couldn't find a guide for your device. Good luck mate.