Need Help! Uno to Barebones

So I have a project I am working on and need some help.

I have a UNO SMD and I need to upload my Sketch to ATmega328 chips they already have the bootloader onboard so would this tutorial work? it says not for UNO but can the Sketch upload be done some way?

I should also mention I need to solder the chips to a PCB so if that TUT is usable would it be a better idea to do the solder them first?

Thank you for your time.

This kind of thing is an easy way :

http://shop.moderndevice.com/products/bub_ii

or the sparkfun variant :

Just solder a 6 pin header to your board(s) and plug one of these 2 on when you want to upload a sketch.