Yep - wait till you have all of your equipment. A razor AND a strop are deemed minimum requirements for a reason.
Take that time and start to really map out your whisker growth. I cannot emphasize enough how important knowing the patterns and directions of whisker growth are for a good shaving experience. The blade to skin angles change as shown below. If you are making a pass and the whisker direction is changing, you will need to learn to adjust your angle on the fly during the pass. So spend time mapping this out - you will be glad you did.
Oh yeah - welcome aboard - the water's great!
