Well, you may not realize this, but Glass > Body. It's much more important in wedding photography to have high quality glass with LARGER maximum apertures other than f/3.5 on the wide end, especially if you are going to be charging for the wedding. The only thing you'll reap the benefits of with getting a new body is slightly better ISO performance. That's not going to save your butt when you're shooting in a dark environment with a consumer grade kit lens that comes with your T1i, or an 18-250mm "jack of all trades, master of none" lens.
Clients pay for high quality images that are sharp, have adequate DoF, and lack of motion blur due to a slow shutter speed. What you really should be buying is an 85mm f/1.8, or better yet a 70-200mm f/2.8L.
I'm not trying to act "better than you," I'm telling you from my experience what you need at a minimum to shoot a commissioned wedding, and your lens choices are simply not there. So, I've seen shots from 3 of your 6 lenses. Which other lenses do you have, and why do they not get as much "on camera" time as the three lenses I already listed?
I strongly suggest you watch this video, because it relates somewhat to where you're at. I'm not trying to discourage you from shooting weddings, but it's bad form to charge ~$700 (base price) for wedding photography shot with consumer grade kit lenses. None of the lenses I saw that you use in your EXIF are "really good" It's just reality, sorry if it's harsh.
[video=youtube;RjBSIvg3pjc]http://www.youtube.com/watch?v=RjBSIvg3pjc[/url]
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