Looks real nice... If you can sort a setup yaself... Great.
Likely... Finish dink or some-such, email and maybe £25 - £50 refund.
Probably... lt will need a bit if meddling nut, bridge and the like, but well worth the time...
Realistically... nothing will need replacing, although you might like to meddle - Bart Jazz 5's on here a while back 😉
Essential...
https://www.thomann.de/gb/harley_benton_hqs_bass_5_45_128_flatwound.htm
Worst... Back it goes and as long as you have the time to wait between credit card due dates to cover it before ya get your refund.
Recommendation... 'Add to Basket'... Oh look!, 'Unexpected Bass in Bagging Area'..