hello, i don't have much factual advice, more just 'what i would probably do in your situation'... if you aren't comfortable trying to opt for a vag birth, i would probably go with option 2.... this way you know that baby is 100% ready for the outside world, as you have gone into labour yourself, i have also heard/read that even a small amount of labour/contractions is benefical for you and the baby, something to do with hormones released etc, i'm sure someone will clarify...
good luck with whatever you decide - maybe someone has some stats or research on vbacs for t shaped incisions... is your hospital very pro vbac? just wondering, mine is super duper very pro vbac, would be interesting to know their take on a vbac in these circumstances.