Unless you are really tight for money, I'd just change out the whole set. Depending on how you drive, the difference in tires will cause different grip levels leading to unusual traction that you may not be familiar with.
If you just drive it around town casually, you should be okay.
If you...
Just an anecdote, I went some Si to FK8 Type R then put in the LE ADS module in my car.
From Si to Type R, I had no issues. The switch to the LE ADS module actually made me sick for my first two drives in the car, in R mode. However, I got used to it fairly quickly. With any luck, hopefully will...
I do love me some quality engineering. Granted the sight glass being where it is, isn't ideal. However, easy enough for me to shine a light on it to see the coolant level.
My OEM FK8 tank seems to still be holding, just shy of 80k miles. Did swap it to Wunderladen tank in case the oem tank does decide to break down... and because bling haha