Disabling Fittext

I find this theme absolutely perfect for the website I recently started. Indeed, the Child theme I created comprises very few modifications.
This being said, I’m not very fond of Fittext (sorry!). While it does a good job on tablets, it didn’t impress me on larger screens (on a 21 in. display, for instance, site titles are disproportionate). So I decided to disable it.
Although the fix I found (by trial and error, I must confess) seems to work, there is still a possibility I might have overlooked something important.

First, I renamed the jquery.fittext.js file into .jquery.fittext.js so that it becomes a hidden file.

Then I added these lines of code in the Child Theme style.css:

h1.site-title a {
	text-align: center;
	font-size: 40.8px;
        font-size: 4.2rem;
	color: #b70000;
	text-transform: uppercase;
	display: block;
}

I also had to define the value of h1,h2,h3,h4,h5,h6:

/* Headings */
h1,h2,h3,h4,h5,h6 {
	clear: both;
}
h1 {
	font-size: 30px;
	line-height: 1.3846153846;
}
h2 {
	font-size: 26px;
	line-height: 1;
}
h3 {
	font-size: 22px;
	line-height: 1.0909090909;
}
h4 {
	font-size: 20px;
	line-height: 1.2;
}
h5 {
	font-size: 18px;
	line-height: 1.3333333333;
}
h6 {
	font-size: 16px;
	line-height: 1.5;
}

I’m sure this is not very orthodox… Hence this post: I’d like to know if there would have been a simpler way to disable Fittext.

Thanks.