You should have enough Summon runes to fill 3 slots if you're lvl 56, its an easy power boost.
Only do mood if you know you will use the character for a long time.
Magatamas and Refining is always a good way to get some extra battle power.
Group skills aren't worth to spend ingots on.

So buy more summoning scrolls ?

You should buy enough to at least fill every rune slot with a rune.

The most important ones would be refines and magatamas for sure. Get all refines to the point they start needing medium runes and get all magatamas to level 4 before you spend on scrolls, just with these you can be one of the 20k power guys at lvl 70.

I'd actually say don't buy ANYTHING yet. Plenty of events show up that reward you for spending and buying.

We had a refinement event, a seal scroll event, a summon event is going on right now, and the server opened with maga events. We had mood scroll and ninja tool promotions too.

Don't buy anything unless there's an event for it. :lol

I agree, unless you really want to spend money to get battle power fast. There are events every week.

IMO as an experience/long time player I'd recommend using your ingots and coupons on Magatama until they are AT LEAST level 4-5.. Then use your freemium currency on Refining.

Refining and Magatama will determine who will attack first (A critical factor for winning)

Honestly it depends on your situation, if you are on a server with people who will outspend u and u want to spend mostly just to get the character u want eventually and not break the bank. You could just convert your ingots to coupons to buy things through the Try Your Luck event and then buy what u want at a reduced price than most events anyway. This is the slow way though but good to keep in mind so that u get the most out of what u are paying. 300ingot can be changed to 600-1500(wishful) every month. More of just a friendly reminder to set aside an amount that can be used for this when u do spend