Asia Trip - Taiwan/Korea/Japan

[MelonBoy]

Ill be heading out for Asia at the end of march for about 3 weeks!
Going with one other friend. We are both down to explore and eat everything
For the most part. I have a good idea of what ill be doing in Taiwan + Japan but currently have no clue about korea..

Would love to get some pro tips or recommendations for each place.
Am I bringing enough or not?

My itinerary
Taiwan
- 3 days Taipei
- 2 days Kaohsiung

Korea
- 5days Seoul
Japan
- 11 days in Japan
- First 7 days we will be staying in Osaka (shin osaka, close to the JR rail station)
- Day trip hiroshima
- Day trip Kyoto
- First half day Nara, Second half day Kobe
- 2 Days in osaka (not including arrival day)
- Last 5 days in Tokyo (Shinjuku area)



My budget plan - this is what ill take with me over in person
$600-700CAD in Taiwanese currency
$200CAD in Korean currency
$200CAD in Japane currency
1000-1500CAD cash (I was told the exchange rate is better in Korea + Japan?)
Any extra cash needed will be taken out of my debit card.

[v_tec]

If your accommodations are already paid for, I feel you might have too much cash for Tw (and generally Jp/Kr). Unless you're a heavy shopper / drinker and visiting clubs.

[MelonBoy]

^
Hotel, flights, JR pass is already paid for. The cash at hand would be for food, attractions, transit, shopping.

Planning to club in taiwan, moderate shopper (if i like something ill buy it but im not exactly into high fashion)