I run a small production company in the South East UK and this year decided to launch a wedding business as a sideline. I'm late to this conversation, but just in case, a few points I hope you find useful:
1 - Having done a few now, I no longer shoot solely on DSLRs but always hire in an XF305, FS700 or similar with the DSLR for a few key shallow shots to add class. The rig you need to make a DSLR function is so unpractical with EVFs, Zoom etc hanging off it and you're moving fast so the best thing you can get is an all in one.
2 - From your previous post, it sounds like you're charging £3k a time, which is a VERY high figure for a one person crew. If you're getting business at that rate, then tell me how! We charge £2k for a two person crew using 3 cameras, plus a 7 day edit (and we're ex BBC producers and operators).
3 - as mentioned before, a couple of Zooms are a lifesaver, you never know when you'll need to plant one near a lecturn or table to catch a speaker or singer etc. Likewise, you need two radio mics at least - one on the groom and one on the vicar. Then swap them during speeches. As ever, audio is just as, or more important than, the visuals.
4 - GH2 is an OK cam, I used to own one as a b-cam to an AF101. Re your last post, the 14-140 is essential. It's a horrible lens but way more practical for events and better than the kiddi-grade 45-200. If you have money then you need the 12-35 and 35-100 2.8s
5 - All of the above comments are useless unless you have clients rolling in. If I started up again, I'd take ALL the money I spent on kit and instead spend it on wedding fairs and advertising. Kit comes after contracts, not before.
Hope some of that is useful.