Consider using lamps of lower wattage in each of the can lights.

What wattage? LED lamps or no?

The question should be what LED light as LED lighting is displacing other types of lighting - fluorescent, incandescent.

The lighting level should be appropriate for the tasks being done in the space. A often used number for kitchens is 35 lumens per sq ft.

The typical output from a recessed can is about 600 lumens using a 60w incandescent bulb.

A CR 6 lamp has an advertised output of ~ 625 lumens and uses ~ 10 w.

There are a number of LED light options available today - Cree branded CR & BR series, Sylvania RT series, ... The light quality, spread and amount varies.

To properly patch a hole, a "california patch" can be applied.
http://www.finehomebuilding.com/item/9212/california-drywall-patch