Guitar chords are totally whacked. Get a guitarist to help you out with those.
m7 and M7 are a reasonable choice, although min7/Maj7, or mi7/Ma7 are also good too (the pairs should match).
It shows G7 as 12ooo3, which is not how a guitarist would ever play that chord. (32ooo1, or 323oo3 of 353433, in increasing order of difficulty would be correct). Other chords have similar problems. e.g. C7 o3231o should be x3231o).
