Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
The only thing I'd upgrade is fit and contact points: bars and tape; saddle and shorts; pedals and shoes. Get fitted and get comfortable. When you're comfortable, you'll be able to go longer and harder.
Keep in mind that all those contact points are very personal to the rider. Some folks need to shell out hundreds of dollars for the right saddle, others might find the $50 version to be the best.