Formation Advice?

So, I'm new to the game... Been playing about 3 days I think? Anyway, I'm still learning how things work and thankfully people have been pretty generous and helpful in-game getting me started and what not...

My question is this: which monsters should I be looking for to improve my current team, and am I even headed in the right direction forming a team?

Formation (left to right):
Dragon of Mars + (Lv. 23) (Brute down [2])
Ring Dragon (Lv. 11)
*Leader* Ladon + (Lv. 70) (Increase party def. [5])
Nidhogg (Lv. 23) (Agility up [1])
Flame Tarasque + (Lv. 23) (Increase party def. [1])

Thanks!

So I'll take it u're sin since u have sin wyrm formation. Well, the dragon of mars and flame tarasque arent that bad for now. First u could get another ring dragon to evolve yours. Other possible additions:

For the short term - Dragon of Uranus, Furnace Dragon, Dragon of Venus (AA).

For the long term, the x5 combo looks like this:
COMBO 5X - A+, Impulse (Sin), Wyrm, Level (Max), Winged
Magma Dragon+ (27bp)
Magic Light Dragon (25bp)
Dragon of Uranus (22bp)
Nether World Dragon (20bp)
Furnace Dragon (18bp)

Exactly what I was looking for. Thanks for the help.

I would recommend against the 5x combo in favor or 4x with nidhogg. In the long term you'll need the agility monsters against most teams.

Kyan

I suppose I was more looking for the short term, what steps to take next. Since made the first post I have evolved Ring Dragon to A+ and I've also acquired a Dragon of Uranus. I've yet to put that into formation because I'd like to evolve it as well. I think keeping Nidhogg is a good choice too, so my next move is to evolve it as well. Thanks for the help!