The free bike is suitable for the ride. It isn't light, and would need some additions. Key areas you would need to pay attention to are the contact areas, ie, saddle, handle bars, hand grips, and pedals. That is, will they suit you at all, and if not then what replacements, otherwise getting them setup for comfort, essential for 14 days of riding. Water bottle clamps, pannier frame and panniers, etc. Toe straps seem fine for those cycling in trainers, but they aren't included.
Training was given a lot of attention. From now on get into a training routine. 2wks with hills and one just flat every 3 weeks. There will be plenty of hills and headwinds, so get training in those conditions. Important to get used to riding on consequetive days, so make Mon and Fri your days off, and train for an hour T,W Th, and a couple of longer rides at weekends. The biggest training week should be 3 weeks before the event, and should include 2-3hrs on Sat and 4-5 hrs on Sunday with hills and headwinds. Cut back training in the last two wks to 70 and 40% the highest wk.
Important to get used to riding in groups, there will be 2500 of us. They recommended riding in groups of 10-20, close together to benefit from slip streaming but it takes practise and verbal communication.
Make your training as close to the real thing as possible, eg, same speed, same clothing, bike setup, weight of gear in panniers, eg, water, snacks, spare tubes, tools, and wet weather gear, sun cream, tape for those areas that blister, eg, feet, hands.
Nutriton focused on keeping fluid levels up and energy levels high. Seems that this is particulalry important on long consequeutive day rides, as once you start to fade from one day to the next recovery gets harder.
There was lots of specific information about choice of bike and fittings, tyres, clothes, training and nutrition, you may be able to get a copy of the slides from WA Main Rds? But meeting up with others could be just as good a way of learning, again Main Rds are collecting contact e-mails to put people in touch.