I most definitely know the sensation.  This 
coming semester is my most important in working 
on my doctorate.  Two stats courses (and aside 
from miraculously pulling off a B in the first 
one 2 years ago it's been 30 years since my last 
math class). Plus an advanced instructional 
design course.  Plus a full-time job, two kids, 3 
cats, and a husband who is the epitome of 
the "absent-minded professor."

Yes, I am certifiable.

Never apologize for education, or for taking your 
time in doing it.  Some of it is great, some 
sucks royally, but it can never be taken away 
from you.  My undergrad degree was in English and 
secondary education, but I also have done work in 
real estate brokerage, computer programming, art, 
voice, a year of law school, and of course the 
masters in library science and 3/4 of a 
doctorate.  Every day I find another way in which 
all the weird things I learned along the way 
connect.

And student teaching is a lot of work, but it's 
such a joy.  That may possibly have been my 
favorite experience back then.  I hope you'll 
love it to.

Best wishes and lots of luck.  And when I get my 
whopping big 2% raise after 2 years of no 
increases, I'll take a good look at that sales 
page of yours!