I am at similar position as you, and my goal is to expand my roster and get useful champs for story and battlegrounds, i also try and clear the paragon gauntlet.
My advice - yes you could push for Valiant but I think you would get better served in the short term to have a good review of your roster first, whatever state it's in.
Review what you've got and look for any gaps - have you got a decent Evade counter at 6*R3 or above? Have you got a Miss counter or someone is immune to AA modification? What about counters to Buffet, Spite, Biohazard?
It doesn't have to be a perfect roster to push on - if you've got Yondu or Iron Man at a decent level that should do as a stand-in for Nimrod, for example. But try and cover the main bases so you've got options. You'll save tons of units on revives in the long run - and you'll probably need them for Act 8 and the tricky bits.
Then, when you're happy, push on. Pick the content you want to go for and good luck.
Comments
There r countless other things and dont have time to list them here.
Review what you've got and look for any gaps - have you got a decent Evade counter at 6*R3 or above? Have you got a Miss counter or someone is immune to AA modification? What about counters to Buffet, Spite, Biohazard?
It doesn't have to be a perfect roster to push on - if you've got Yondu or Iron Man at a decent level that should do as a stand-in for Nimrod, for example. But try and cover the main bases so you've got options. You'll save tons of units on revives in the long run - and you'll probably need them for Act 8 and the tricky bits.
Then, when you're happy, push on. Pick the content you want to go for and good luck.