Playing an URB requires a different approach.
There are a few players who sometimes use a 5 string URB, more with C extension (longer E string)
Given the vision I have as an amateur player (who is getting older --50+-- and plays both) with my youngest son an aspiring bassist:
I have loved the sound of URB from childhood. I heard and sometimes actually
listened to jazz and classical music from when I was really little (3 and 4).
But I could not afford an URB until my early 30's

I played electric bass from age 14.
If you can possibly get/rent/borrow/(steal) an URB
and bow, go for it.
It will be one of the best things you do in your life.
1) Your technique and appreciation for tone will be much different.
2) You will listen to different music, at reasonable volume.
3) Possibly, you will gain ensemble skills.
4) You will meet all sorts of interesting people. Both fellow musicians and in the audience.
The gear is vastly more costly. "Decent" student bows cost around $1K, graphite a bit less. "Cheap" student basses $2-4K, what are considered budget $5-7K, and OK lower quality basses begin ~10K. Many electric players on this forum may disagree with me, (that it is way too much, if anything, I think it's low)however it really costs money for gear that you will grow with. If you don't like it, stay with it, or have any talent, good gear can be sold at excellent return. Junk will always be......
A good teacher will save you years of time, even if you are as talentless a hacker as I am. The best money I have ever invested was in lessons with George Vance.
Maybe see Pat Neher (a brilliant teacher) on the acoustic bass 'Ask the Pro' side of this forum if you can't find more help there.