Bootstrap migration from CDN to asset pipeline

bootstrap-cdn.gist

I have used a CDN version of Bootstrap as my only stylesheet source for my first Hyperloop app.  
I did that to get the page layout and navbar setup I wanted without having to dive deep into components head-first.  
This choice gave me a complete nav-bar with assorted buttons and text, and a nice layout of two tables arranged side-by-side.  
Just what I wanted.

My trade-off with this choice is the fact that the only way to change colors of my buttons, 
for example, is to look through the Bootstrap button documentation and pick peculiar Bootstrap 
class names that produced a color close to what I wanted.  
I also got some unwanted little asterisk-like icons stuck on some of the buttons, 
which I would rather not have.  

Now, I am thinking about dropping the CDN versions of Bootstrap for internal versions, 
loaded via Bootstrap-rails, and Sass, loaded via Sass-rails.  
I am doing this in order to get much better control over CSS classes.  
I want to create a set of styling classes that map consistently onto the naming conventions 
used in my hyperloop components, and have the colors and properties that I want exactly.  
I no longer wish to accept the Bootstrap CDN defaults.

Is there any big down-side to this decision?  
I am thinking that the asset pipeline overhead might be substantial, and would increase my load times unfavorably.

The idea of having style class names that match consistently with my component names 
is very appealing to me (ValveButton component is styled by a ValveButton scss class, for example), 
and I want to be able to fine-tune my color options.