Many good bass solo players like Marcos Marchado or Lauren Pierce have smaller basses, that fit into the 1/2 or 5/8 size range. And if you are mostly playing in an environment where you need amplification, a small size bass body, that is less prone to feedback, is preferreable. Every time a smaller bass size gets mentioned, seems the brains are switched off. If a bigger bass was always better, 4/4 basses or bigger would be the norm, not the 3/4 basses. The bass has to fit the body of the player.A tall player can easily play a smaller bass, but a small player not a bigger bass. Main points to decide,if a bass is too big, are: In playing position with pin completly inside the bass, the nut should not be too far over the head of the player. Fingering the lower positions above head high for a long time does not work. And at the same time as fingering the lower positions, you must be able to get a good sound with your right hand, and that would e at end of fingerboard or below. With a size of 5.0 ft, you will have problems playing with a mensur of about 104 cm (3/4 bass), does not matter the shape of the bass. Usually it is easier to play a bass that is too big sitting down and having the bass leaning to you more (thats avoids having to finger the lower positions with hand above head level), but the pin then has to be fixed to keep the bass from sliding.