Giant Propel Advanced 2

So I am currently on a Defy 3 2014 and now about to upgrade to the Propel Advanced 2 2015. Stats fallow
Defy 3
Sizes M/L
Colors Black/Bright Yellow
Frame ALUXX-grade aluminum w/ rack mounts
Fork Composite-grade composite, alloy OverDrive steerer
Shock N/A
Handlebar Giant Sport, 31.8mm
Stem Giant Sport
Seatpost Giant Sport, 30.9mm
Saddle Giant Performance Road
Pedals Caged w/ toe clip and strap
Shifters Shimano Sora
Front Derailleur Shimano Sora
Rear Derailleur Shimano Sora
Brakes Tektro R312
Brake Levers Shimano Sora
Cassette SRAM PG950 11x32, 9-speed
Chain KMC X9
Crankset Shimano Sora, 34/50
Bottom Bracket Sealed
Rims Giant S-R2, double wall
Hubs Giant Tracker Sport Road
Spokes Stainless Steel, 14g
Tires Giant S-R4, 700x25


So I am going to the new 2015 Propel Stats fallow
Sizes M
Colors Composite/Silver/White, Blue/Silver/Red
Frame Advanced-grade composite, Electronic ready
Fork Advanced-grade composite, Hybrid OverDrive steerer
Shock N/A
Handlebar Giant Contact, 31.8mm
Stem Giant Connect
Seatpost Giant Vector, Composite
Saddle Giant Performance Road
Pedals N/A
Shifters Shimano 105
Front Derailleur Shimano 105
Rear Derailleur Shimano 105
Brakes Giant SpeedControl SL
Brake Levers Shimano 105
Cassette Shimano 105 11x28, 11-speed
Chain KMC X11L
Crankset Shimano RS500, 34/50
Bottom Bracket Shimano, Press fit
Rims Giant P-A2, Aero
Hubs Giant Performance Tracker Road, Sealed bearing, [F] 16h, [R] 24h
Spokes Sapim Race, 14/15g
Tires Giant P-R3, Flat Guard Deflect 3, Front and rear specific, 700x23

So my questions are What should I notice first about getting on the Propel?
What do you think of adding aero bars to this to use?
1st time on clip ins, What should I except?
Do you think I am upgrading to fast or to much to go to a 70.3 distance and maybe a full IM by next season?
Do you have any experience on the Propel and if so what year and what do you think?
Now please feel free to leave me any info that I can use to better myself or ride.
Going with a new Saddle, new bar tape, and some basic add ons Comp and water bottle cages and that should be it.


Edited by kt2007 2015-01-24 10:20 PM