Adding the 5th string gives you 5 lower semi-tones, but that shouldn’t be your only thought when you play a 5 string.
You then end up playing like you’ve a 4 string with a rather bulky and often underused B string.
I suggest you look at your technique and how and where you construct your lines.
its a chance to be far more economical with your left hand movement, a chance to be 20% slicker and working ‘across’ the board and less up and down the board. I think it a good opportunity improve your fretboard knowledge.
The B string can be the most tricky to manage/mute, but equally it can bring real benefits to your playing.
As suggested, it’s not always helpful to jump between 4 and 5 string basses; worth concentrating on the 5 and seeing it as a different tool not necessarily a better tool.
Oh, and in the alternative tuning debate, I wouldn’t even consider it, especially if this is all new. Master the new normal first. Enjoy.