I haven't got big gangly bass man fingers either haha! This bass has quite a thin neck tho so the strings are relatively close compared to other 4's and even 5's.
But as Pinball said, do you need 5 if you are re-learning? It certainly is fun having that lower string but even more pleasing when you know how and where to use it.
Admittedly, I started off on this bass but went to 4-string and have only really just started using another 5-string lately, simply because I didn't feel the need for the 5th.
Easiest thing to do would be to learn a few lines and get to a music shop and just work out what feels comfortable in your hands.
I wouldn't stop buying it tho