First off the straight is great for taking off a heavy beard, if it quite long I suggest using an electric clipper to take it down to 1/4" or so so its easier to see what your doing. As far as one razor is concerned, you kind of have two choices. If you have one razor you need honing equipment, if you buy two you and keep one sharp & send one out for honing as needed & use the other, and just keep staggering them. Cost is perhaps the same if you dont want or need fancy or new razors to start. To decent starter razors or simple restorations will work fine and can often be had for slightly more than say a 5/8 Duvo (a common starter kit razor).

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