Am i the only one having a hard time pronouncing three consonants together? " t w s" is quite a mouthful. Will people still understand me if I remove "w" from the sentence?
Probably yes, as it wouldn't resemble anything else anyway. But maybe it's better to make an a bit bigger stop between "jest" and "wspaniałą"? Also it may help to think of 'w' as devoiced and make it 'fspaniałą' in pronunciation.
Yes, because "osoba" is a gramatically feminine noun what doesn't mean that the person is a female. Similarly, "człowiek" (masculine noun) can refer to a human being of any gender.