In reply to first post,
It's a huge step - but achievable if you can put the time in
Road Bike - but don't limit yourself to Bolton, can't be doing with this 'only a real Ironman counts' there are plenty of fab Iron Distance races in the UK (be careful of calling all long distance races Ironmans or you'll be arrested.
Don't even think about a goal time, aim to finish.
Difficult one. Early or late sessions, hour at lunchtime?
Speedwork, not yet. You need the hours and hours of base training first.
Drop us a line if you'd like a bit of info on long distance programme (only done 4 of the buggers and hopefully not finished yet) but have a fair idea what works and what doesn't