Fresh legs to the scene

Just wanted to say hello to everyone on the forum!
19 y.o here looking to get into road cycling. Always been sporty but fancy something new to do, always been into bikes, bmx as a kid then a bit of mtb xc, but the landscape of Norfolk isnt best for mtb
Looking for my first bike, have an absolute maximum budget of £1K but the cheaper the better, but i'd rather buy something that will last as i progress as a rider rather than having to keep making constant upgrades etc. After doing a lot of research for bikes that fall into this catergory the ones that keep popping up are the:
Giant Defy 1
Boardman Road Team Carbon Bike Limited Edition (Shimano 105 gearing)
Focus Culebro
Canyon roadlite
However, i've also found a discounted:
2012 GIANT TCR COMPOSITE 3 - £949
What would you guys suggest, and is it a risky business buying 2nd hand bikes if i can get better bang for my buck?
Cheers
19 y.o here looking to get into road cycling. Always been sporty but fancy something new to do, always been into bikes, bmx as a kid then a bit of mtb xc, but the landscape of Norfolk isnt best for mtb

Looking for my first bike, have an absolute maximum budget of £1K but the cheaper the better, but i'd rather buy something that will last as i progress as a rider rather than having to keep making constant upgrades etc. After doing a lot of research for bikes that fall into this catergory the ones that keep popping up are the:
Giant Defy 1
Boardman Road Team Carbon Bike Limited Edition (Shimano 105 gearing)
Focus Culebro
Canyon roadlite
However, i've also found a discounted:
2012 GIANT TCR COMPOSITE 3 - £949
What would you guys suggest, and is it a risky business buying 2nd hand bikes if i can get better bang for my buck?
Cheers

0
Posts
2016 - Cervelo R3
2013 - R872
2010 - Spesh Tarmac
What would be a sensible amount to keep back for accessories? Obviously i dont want to go crazy just starting out!
I don't think i chose the cheapest new interest, even the magazine i bought today was a fiver!!! :shock: Oh well im sure it'll be fun!
£50 - helmet
£25 - pump
£10 - inners & tyre levers
£40 - padlock
£35 - pedals
£50 - shoes
£35 - shorts
£40 - top
Above are approximately prices - and bear in mind you can get cheaper. Not everything above is necessary, but the more you do the more you will want and need the above!
2016 - Cervelo R3
2013 - R872
2010 - Spesh Tarmac
I bought a bike lock for my bike, but have never used it in 2 years - just depends what/how you intend to use your bike and where you intend on leaving it. You can get by without the shoes (if you have flat pedals) and clothing. You'll no doubt want it before long, but I personally wouldn't reduce the bike budget to buy clothing at first, get it when you can afford it. I've had my road bike 2 months and only bought clipless pedals and shoes a couple of weeks ago and only just got some padded shorts - didn't have a problem for the first 2 months....
2016 - Cervelo R3
2013 - R872
2010 - Spesh Tarmac
Ditto, only thing I would add is gloves. If you have been an MTBer do you have spd's pedals and shoes for that bike? You can probably get away with just swapping them over.
For a first road bike i'd recommend that you want to make sure the bike fits properly, I personally think you'd better to actually sit on a few bikes and take them for a spin - this rules out the Canyon. Do a bit of research, which it looks like you already have and then decide on the Giant Defy 1.
If you're in Norfolk have you looked at Fatbirds Don't Fly? They've got a Cinelli Experience with Veloce that comes in under budget and got a good review on here http://www.bikeradar.com/road/gear/category/bikes/road/product/review-cinelli-experience-12-46195
Commuter - http://www.bikeradar.com/forums/viewtopic.php?f=40044&t=12877017&p=17855019#p17855019
MTB - http://www.bikeradar.com/forums/viewtopic.php?f=10017&t=12930006&p=18407199#p18407199