[mothered]

Out of the 5 refunds that happened on the account all of them were legit and the items were returned

It doesn't matter - they're still deemed as refunds, which Is no different to refunded SEd Items.

I'm just curious as to what methods could be successfully used on this account

Name the Item(s) and we'll take It from there.

I know that there's a weight requirement with the EB method

< 120 grams.

so maybe I could use that?

It depends on the Item you're planning to SE.

I want have an idea of just how much I could SE with this account and what the best course of action would be.

How many transactions In total have been performed, and when was the last one?