This can be done very simply for your purposes. Just disable the page file and reboot. If you notice a performance decrease or increase, reenable and reboot or leave the page file as is.
An easy check to see if you "need" a page file would be to load up everything that you do at one time, many browser windows, games, email, etc. Then check the memory usage. If it is well below 70%, you probably do not need a page file. However, understand that Windows is a "paging" OS, meaning, depending on what you do, you could see a decrease in performance.