Change safari downloads path to most recently created folder

i am brand new to mac automator. this is what i want to automate. i get orders for printing with attached links for customer-uploaded .PDF files that i need to rename based on the paper/size/qty/etc. I need to basically create a part number and save the file as such. it's a pain. i want to select or copy the order number (text) of the open order (ex. "44444"), have a folder created that is named by the order number ("44444"). next i want to click each download link and type the name ("1A" for example) and have it automatically save in the folder i just created (folder="44444"). when i save the file and it automatically saves into the folder i want a prefix of the order number ("44444") added to the beginning of each filename and also "_PAPER_SIZE_QTY" added to after the filename "1A". so after the action is finished i want a folder and filename like so: "[login to view URL]" even better if i can be prompted when i save the folder to add variable values for "PAPER" and "QTY" and have those automatically populated in the filename. 1) select order number on website (text) 2) run script/service that will create & name a folder from the selected/copied text (ex. "45947") 3) make new folder the default downloads folder for safari 4) all new downloads will go into new folder until script/service is run for a new # 4) any files saved into the NEW default download file will have the name of the folder (45947 or whatever the order number was) added as a prefix_ to the saved file name entered at the download/save prompt. 5) in same action or a new action add suffix of "PAPER_SIZE_QTY" I have other actions i need but i need to start here. The name would then be changed based on other variable (Paper/size/qty) with find & replace.