The bandwidth shouldn’t be very narrow. My 80m dipole is also made of thin wire supplied from SOTAbeams (see photo via the link at my first reply on this thread) and the VSWR is good enough to cover most of 80m. I shortened the length of mine to be better for the CW sub-band [You don’t say whether you intend to do SSB or CW or both].
See my 80m VSWR plot at …
Mind you, I have a brilliant internal ATU in my KX2 which will load up a wet string if necessary.