Park Island fits your requirements - not perfectly but not that bad.
The commute to Shek Kip Mei would be a little tedious - I guess the bus or ferry to Tsing Yi or Tsuen Wan and then the MTR with TWO changes (unless anyone knows a better route). Probably take at least 40 mins.
The supermarket in Park Island is somewhat limited and there is nowhere else easily around - that might cause you inconvenience.
Other than those, it should be fine.
If I were you I would also look at places along the coast from Tsuen Wan to Tuen Mun (Sham Tseng and Sui Lam / Gold Coast are the main names to look out for) - those are more flexible because of the lack of ferry and get cheaper the further out you go.
Alternatively you could consider something on the East Rail line going north (Tai Wai, Shatin, all the way up to Ma On Shan - again - further north lower price) which would be much the same commute.
Anyway - same advice - come and look first. Build quality of the apartment is probably more important for noise than location as your neighbours are actually the ones making most of the noise!