Should I or shouldn't I?

Im looking at a new cinelli mash parallax for £700. The size is a 54 and I'd say I was an in between 52/54 at 5ft 8 1/2 inches. Shall I buy. Views please. Ta

Is that a full bike?

Yes

Full spec?

Whats the spec? Can you list them here

This is all I have

Tube set Columbus Airplane
Frame weight 1500 g
Bottom bracket threading BSA
Seatpost diameter Ø 27,2 mm
Fork Columbus Pista 1-1/8” - 1-1/2" Aluminium -Steerer
Fork weight 500 g
Head set Columbus Compass 1-1/2"
One year of testing in the most demanding criterium races with the collaboration of MASH-SF riders. Parallax is the evolution of the most demanding urban track frames. Boggling seat and steering tubes angles, shorter stays and 28mm rake fork: a thoroughbred horse waiting to be tamed. Sprinting, responsive, Mash.
Columbus Airplane aluminum tubes with variable thickness,
1.5 " Oversized head tube
27.2 mm Seatpost
BSA Bottom bracket

I'm presuming the crankset is by Miche

Wheels? The bike is Brandnew?

Miche x-press

Wait until he drop the price or buy individual build it with different parts youll save some £££

Thanks AlphaOmega. what about the sizing I mentioned?

If its too big, it will always be too big.

Unless you are still growing?

I've bought bikes in the larger size (I'm between 2 sizes) and spent the whole term of owning the bike regretting not getting the smaller size.

Edit: Just seen you are 5'8"- Get a 52 - My opinion

We're the same height i ride histogram 52cm with 110 17°` stem and parallax 54cm 11o stem 17° i am happy if you want to try my histo before committing to buy

Thanks for the offer. Where you based?

Shepherd bush

I may take you up on that. As mk1mark said a 52 will probably be the better option

Choose wisely;)