Advice on scaling ? Where to go from here?

So after months of lurking,I finally dived in a few months ago. I registered my business ,set up seller central and got to work.

I sold about 3k (44% ROI) in this last 2 months doing FBM seasonal items.

Thing is ,seasonal stuff will be dying off . I want to eventually wholesale.

How do I maximize my $1400 deposit from Amazon ? I am also a full time corporate employee with a newborn .

So I have been bagging up orders after work .

I finally found a business model I love and would like to make it long term.

Thanks so much .