The Hcw 4 is for the fixed cup on the drive side and also has pins for the adjustable cup. If you get that, you probably won't need the chopstick pin spanner. On the other hand, you don't need to remove the fixed cup to overhaul the BB.
The HCW 5 should work OK. I use the Campy tool which has more notches and fits more snugly. Hozan also makes a nice plier-like adjustable cup wrench. Both these tools would cost you a bit more. If you're doing the every once in a while BB, I'd stick with these Park tools.
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N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '95 Gios Compact Pro, '95 Carrera Zeus, ‘81 Masi Gran Criterium, ‘81 Merckx Pro, ‘89 Cinelli Supercorsa, ‘83 Bianchi Specialissima, ‘VO Randonneur, Ritchey Breakaway Steel, Rivendell Rambouillet, Heron Randonneur, ‘92 Ciöcc Columbus EL