May I ask you some questions about Ni No Kuni?

1. How much time is needed for platinum? 

I got the Plat in 62 hours

2. How much do you have to grind?

I would say about 10 hours of grinding to beat the secret boss and complete the S rank in solesseum. While leveling up you want to level up familiars to quickly get to the 250 needed. Getting items for alchemy can be a little frustrating but they are in a specific spot so its really not that hard.

3. Can you enjoy the main story and the side quests you want and then focus on trophies. Or do you have to keep an eye on trophies all the time?

Yep the game can be beaten and then all the trophies not story related or naturally gotten can be gotten post game.

4. Are there many boring, dull trophies?

The only trophy I really disliked was the alchemy 120 different items. 

I'm getting the game anyway sooner or less, I just don't know if I want to get the plat or not. Bros before hos. Fun before trophies, you know

It was fun for 60 hours an annoying grind for 2

With my backlog of games I thought I could wait for a price drop for Bioshock Infinite, but then some of those perfect 10/10 scores came out and a 94 on metacritic and now I don't think I can hold out much longer to play this masterpiece!!

I played it for a few hours last night... pretty good so far.  I'm missing the lack of "save anywhere" but the game hasn't been too unforgiving on hard (yet), although it costs money to resurrect yourself.  I'm not sure what happens if you're out of money and die.

With my backlog of games I thought I could wait for a price drop for Bioshock Infinite, but then some of those perfect 10/10 scores came out and a 94 on metacritic and now I don't think I can hold out much longer to play this masterpiece!!

I should add that it essentially cost me $30.  I still wouldn't pay $60 for a game in this day and age, especially with my backlog.

It's 95 on the PS3 metacritic page now! Well I'm aiming to at least wait until April 10th when the rest of my family goes away on holidays, leaving me home alone to enjoy the game without any disturbance. Meanwhile, I'm gonna take a look at the short novel, "Bioshock Infinite: Mind in Revolt", in preparation, and work my trophy completion rate to over 90% before loading up another new game.

But yes, it's tempting! I'm keeping the game still wrapped, because I know if it's opened, it's gonna fly straight into the console...