bfitz,
First of all, congradulations on your new venture & good luck to you.
I would suggest that you read every possible post on CT that might apply to your situation - there is a wealth of information on here & you will soon figure out who the "pros" are on this site.
I also agree with grahaminteriors post. IMHO you should look & sound as professional as possible (from A - Z) with everything you do.
I understand that you are 30 years of age, but if you present an estimate to a prospect that looks like a text message, in most cases that won't fly.
Your potential customer starts "judging" you & your company within 3 seconds of their initial contact with you - no matter what the first impression may be, I.E.; In person, on the phone, YP ad, newspaper ad, website, etc.
I'm sure you've heard the old cliche' "You never get a second chance to make a first impression". Cliche's are cliche's, because they are true!
Once again, good luck to you - us small business owners need to stick together, especially with what looks like is coming down the road from our current political administration.