textures or shader?

so im making a 3d platforming endless runner game and need to make platforms that look like this

i made textures 2048 x 2048 and will change them through script depending on level etc... but my question is.. is that optimal? i mean there are going ot be so many platforms with these textures.... should i be making shaders or something? its juts that making shaders especially these types with multiple surfaces seems daunting to learn. this is my first game and want to know if i can get by with using the huge images for now... and if i delete level parts as the player passes them maybe that will help decrease cpu usage? any insight will be helpful! thank you!