How to get photos off icloud and back onto my iphone 4 after I update it?

I'm trying to update my. Iphone 4 from the ios6.1.3 to ios7.1.2 but i don't have enough gigs free due to the large amount of photos i have on my iphone (currently 1,100) I have already deleted as many as i can but there still wasn't enough room free for the update. So I backed up my phone on icloud with the intention of deleting all my photos so i can update the phone. But I want to know if you can get the photos off icloud and back onto the phone once the update is done, before i do it or else i won't delete the photos and won't be able to do the update. I have it also backed up to my computer but these are photos i like to have on hand so i really don't want to settle with just having them on my computer. So my point being how do i get photos off icloud and back into my photos on my iphone once the update is done?

The photos shpuld automaticaly be on your phone. Just click my photo stream on your device and they should be fine.