Some of the BF favorites, from numerous threads and searches, are:

Rema Tip-Top Patch Kits
Topeak Road Morph Pump

If you do go with CO2, be sure not to leave with just one cartridge.

Basically, not self-sticking patches and a pump with even a short air hose are considered, by the majority, to be the favored choices.

A tube only weighs around a quarter pound, give or take depending upon individual tube chosen, and takes up very little space in 700X25 size.