Wow! I posted this and went to bed figuring I'd get minimal response! Woke up to a ton of great advice! First, thanks to everyone for your replies.
To answer one question about getting paid; Yes, he is paying me around $100 a shoot. This is less than the full time Pro's charge in our market by somewhere in the neighborhood of 50 - 100% based on my research, so it's kind of a win-win for both of us. He's getting much better results than he was on his own, and I'm getting a chance to gain experience and learn by trial and error with a client who's not as demanding as someone who's expecting top quality results. I've basically saved all the $ I've made, reinvesting in a better tripod head and tripod, so I'm sitting on around $1,000 that I'm trying to determine the best way to re-invest to hopefully get better, and eventually grow my business.
I believe I can eventually expand my business beyond just my brother, because I'm seeing a LOT of crappy pictures on the local websites. Here is just one example of what I see... a million $ + home, and the verticals aren't vertical, it's clearly shot w/ a point and shoot w/ direct flash... it just makes me sick!!! http://rflora.reeceandnichols.com …W-ROCKWOOD-Court-94128460
I know my composition needs work, and I definitely want to explore multiple off camera flashes. I was just reading last night about using one, maybe two, off camera flashes, in conjunction with bracketing exposures and using the Enfuse plug-in to blend. I have been using Enfuse with just available light, and I've gotten mixed results... some look great, others look muddy and lack contrast. I've also read in addition to Mike Kelly's DVD, that Scott Hargis puts out some great info as well. I will have to look into both of those.
So basically, what I'm gathering from above is I should focus on my technique and probably upgrade my lighting and learn how to do that efficiently before I go dropping a ton of money on a new full frame body.
Here's my next question: I currently have one TTL Yongnuo 468-II and one manual Neewer TT560 flash (and a couple cheap flash stands and umbrellas). Would a YN560 or YN565EX TTL play nice with either/both of my existing flashes? I'd also be interested to know if the YN622 flash trigger/receiver/transmitter is a worthwhile investment (I’m thinking it’s a must if I plan to get the flashes off camera).
Lastly, to address my lust for a full frame body... I figured that's a natural progression for anyone who's moderately into photography. I started out getting into photography only a few years ago (end of 2011/early 2012) because I wanted to mostly document my kids growing up. I only got into the RE photography business because my brother randomly asked if I could do a better job than he did, I then realized I could, and I've since grown to love it. From there, I kind of looked at the extra money I was making as a way to be able to afford a nice full frame body without my wife threatening to murder me for dropping that much money!! Aside from RE photography, I still love to take pictures of my kids, and was looking for something that would be a good all-around tool. Both kids are young, and are already in many different sports/dance/activities/etc, and I’m sure there will be even more in the coming years. I know the 6D is supposed to have excellent low light performance so that is one reason I had it on my radar (school plays, dance recitals, etc), however, it is lacking in the focus department with barely more focus points than my t3i. This is where my dream of owning the 5D MKIII comes in. I know it would be excellent for sports (T-Ball/Baseball, Soccer, etc, etc), and I’m sure my ego would greatly expand owning that bad boy with a couple lenses with that red ring around them!
I suppose I will just continue to save my money and work on technique. With better results comes more business, and with more business comes more money… eventually leading to the things I WANT but don’t currently need!
Thank you all again for taking the time to respond! Your thoughts/opinions are much appreciated!
T3i gripped - 18-55 Kit Lens - Nifty Fifty - Tokina 11-16mm f/2.8 - Sigma 30mm f/1.4 - Tamron 70-300 f/4.0-5.6 SP Di VC USD XLD - Canon 100mm f/2.8L Macro IS USM - Neewer TT560 - YongNuo YN-468 II