1) Car not starting first go - put the key in, turn, there is a small tick from the engine, but no turnover, after a few goes it did. but it led into problem 2 and 3:
2) Transmission stuck - It locked itself into park once it did turnover (4sp tiptron).. Took about 4 engine starts (with frustrating reverts back to problem 1) for transmission to unlock.
3) Voltage amazingly low - While car is running, putting lights on etc drops volts to between 8 and 9 when idling - once revs pick up a little, it's back up to ~13.
I would have gone straight to alternator as the problem, however, it was rebuilt about 6 weeks ago....

I don't really want to take her out now incase I get stuck somewhere. Any ideas?