I have a Late 2012 27 Inch Imac. Has not been used very much and in excellent condition. Specs: 2.9 GHz i5 8GB Ram I started running Lightroom & Photoshop on it and it's a bit on thew slow side. I don't have the option to buy a new one right now. How much of a difference in speed would it make if I do the following: 1) Upgrade the RAM to 32GB 2) Upgrade the HD to a SSD Also what is the cost I should expect for those upgrades?