Should i keep going with fighter team?

My current team is 
zeff max
Ace 5 star 38
Ussop golden pound max
Nico robin 5 star 50
Luffy g2 61

I also have 
Mr5 4 star 20
Alvida 3 star 38
Arlong 3 star 20
Fire pearl and kuroobi 20
Kraken 3 star 7

Ashura zoro 18
Guard point chopper 1
Izo 4 star 5
Hachan 3 star 5
Smoker 3 star 14
Miss goldenweek 3 star 5

Diable sanji 27
Capone 4 star 5
Kuro 3 star 5
Tashigi 3 star 10

Tabasco ussop 5 
Vivi 4 star 41
Coby 5
Mojo richie 23

Hapiness punch nami 26
Tornado tempo nami 30
Xdrake 4 star 7
Buggy 3 star 14
Krieg 3 star 5
Cabin boy helmeppo 5
Hogback 3 star 13

Should i switch to dex team or intel team maybe?
I can hardly find a friend zeff so my attack is not so high.
Any help would be glad, thank you

No you shouldn't. Zeff is not a great unit to be honest. Sure he has the 2.5 attack but his stats and specials are poor.

He might increase attack but two Zeffs would drag the overall HP down of your team.

You can make a good burst INT team because you have Robin and Towel Nami.

Towel Nami would give you 2.5 x attack.

Robin gives boost to INT attack.

Some orb manipulators to compliment those two and you can do some massive damage.

Not sure you have any decent ones though.

Towel Nami (lead)
Robin
Don Krieg
X Drake
Pound Usopp

Though saying that if you got a brain point chopper you could combine Buggy and him for lots of INT orbs. Brain Point Chopper generates RCV - Buggy turns RCV into INT orbs.



http://op-tc-eng-version.blogspot.co.uk/p/teams-int.html

I look on this blog for help. It's very useful. People who made it are more knowledgeable than me.

 I would invest in your Vivi too - probably too late for you to kill Chopper and perhaps not enough time to lvl her for Garp but if you can get a high lvl 5* Vivi you can use a Vivi/Pell/Laboon team.

Vivi's are very popular for people to add for the current raid bosses in global (tougher ones will mean they can't be used).

Vivi/Pell/Laboon teams slow but deadly.

Thanks a lot man, ill upgrade my intel team then.