Triathlon bike buying advice

[Tri_Doc]

End of season, sold a share in a trackday car and time to upgrade my Trek SL1000 that has morphed into my triathlon bike that i've owned since 2008 and has been great for me. I love the sport and am totally set on a cervelo.

Two options, same frame sizes/geometry essentially:
1) 2017 (new) Cervelo P2 - 105 groupset, FSA brakes/crank, profile design cockpit
2) 2014 Cervelo P3 - dura ace groupset, rotor 3d+ crank, magura hydraulic brakes, 3T aura cockpit (frameset in my favourite colour but a bit scuffed in places)

both bikes would be run on parcour chrono wheelset and are priced at £1700 give or take £5.

They're essentially the same frame. What do people think regarding the sundries etc. Obviously groupset etc is better on the P3, but hydraulic brakes could make maintenance a faf. I'm leaning towards the P3, but would love to buy a 'new' bike for once rather than s/h frame.....

[IroningMan]

I'd go for the P3 - if you buy the P2 then in a year from now you'll have spent at least half as much again slowly but surely upgrading it all to Dura-Ace.

[Usget]

If you can be sure of the provenance of the P3, I'd have the P3. As long as it hasn't been owned by a wally.

[Tri_Doc]

Usget said:

If you can be sure of the provenance of the P3, I'd have the P3. As long as it hasn't been owned by a wally.

Currently on sale from a well reputed second hand/exchange shop and comes with 3 months warranty. I'd also inspect it first for reassurance.