I did the mini pump until I had to use it a few times and learned the hard way that CO2 is superior.

When I lived in SoCal, the more you ride out in the foothills and rural areas you'll get goat heads and flat tires. If you ride with other polite cyclists. Everyone stops for your flat repair/replacement.

It it is your job to do it as fast as possible. The Ideal is under 3 to 5 minutes from yelling "flat" to rolling again.

Hand pumps are too slow and heavy.

Most at small tail bags can hold 2 tubes, 2 co2 cartridges, boot patch material (or a dollar bill) and plastic tire irons.

If You think you'll go through lots of co2 then buy in bulk online "threaded food grade whip cream co2 cartridges".

One cartridge will pump to 110psi in a 23mm tire. No need for partial hand pumping.