I have a MBP. When I open Photos program on my MBP, all photos download onto the computer from the phone via iCloud photo stream and are then physically stored on my computer. I've recently run out of my 5GB allowance on iCloud. On my iPhone, if I delete my iCloud backup photos, I will still keep the photos on my computer, but then will start a fresh 5GB on iCloud to begin backing up new photos, right? I'm fine deleting the iCloud stored photos every 5GB just to keep from paying to upgrade storage space. Will this work the way I've described?