The Ibanez might be named short scale EUB or upright bass guitar since it uses bass guitar strings.
DB strings and BG strings have a different construction. I once got a DB that was constructed like longer bass guitar string and it sounded almost like fretless bass on my DB and EUB.
Bass guitar strings are not made for bowability, their construction is rather similar to very old undamped double bass steel (core) strings with a single rod core. They were quickly replaced by multi strand, often spiral wound, steel cores that are more flexible, often with different amounts of damping material between the winding layers which also help with bow ability and nicer arco sound.
The longer scale of real DB strings helps bowing the lower strings as they can be thinner and therefor often more flexible.
Roundwound strings (as most BG strings are) can be bowed, but it is a bit harder than flatwound and the bow should be moved perpendicular to the string. Bowing flatwounds is a bit easier.
But even on a DB there are strings for bowing, for plucking and several hybrid choices that need to make compromises on both sides.
So, you see that a bass guitar based EUB is not optimal for bowing. You might need experimenting with strings (metal outer windings needed!), rosin (get something sticky like Pops) and bow hair (black grabs better). But I’m sure it sounds too metallic due to the BG strings.
The quality of the bow is not so much important as you have a situation that is far from optimal.
Carbon fiber is almost indestructible but sounds a bit cold, wood (brazilwood is OK for you) is warmer but the tip can break if it falls down on it making the bow firewood.
Bow rehair every year (or two if you play by less), cost about same price or half of a cheaper bow, but with better hair quality and fresh.
The bowing might become a bit costly experiment.
A DB-based EUB is better for bowing and the ones with a resonating top best for bowing (but still not as good as a real, even cheap, DB). But these are more expensive than a student DB and probably more than four times expensive as your Ibanez.
What does a fully custom made BG cost you? That and a bit more is what you need to invest.
A cheap doghouse with a bridge (leg/foot/adjuster) mounted pickup might be a better thing for bowing unless it gets loud.
Keep in mind that you need a DB luthier for setup. It is easy to ruin a DB or EUB with DIY.
You might find players who bow BG strings, but most if not all of them never tried bowing a DB or better EUB.
And there are the tripod vs. endpin types.
The tripod fixes you relative to the bass. Not good if you play for a longer time but maybe helpful if you need to change quickly between BG and EUB.
The endpin helps you to be able to move a bit as the bass moves with you, but you need a body support and it takes some time to find the best position.
No tripods on an acoustic DB, so DB players in general prefer the endpin.
BG players often prefer the tripod (maybe because they don’t play longer periods and don’t have the comparison or don’t want to invest time to find out what is best or simply because they already get it with their EUB).
