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.
It seem to indicate on the tooltip that wspaniałą is feminine. Or is it the same in masc?
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.