I'll be financing the first few properties with Conventional mortgages.

This means that you won't be able to qualify for conventional loans to fund the investment.

This young designer and their team also did stagging for SFH sales and had an inventory of furniture that they could "sell" to us at a significant discount.

I've been reading up on it - fully aware how challenging it can be to get financing, finding inventory and all the management involved but also intrigued by the cashflow if the deal is good. 

These lenders tend to work with LLC's as opposed to individuals whereas conventional lenders tend to not loan to LLC's unless it's commercial lending.

.~ Inventory scarce and multiple offers taking place in many cases.

I would highly suggest looking into conventional 3-5% down loans.  

Although most all of the new inventory seems to be single family right now.

So my question is should I save until I can finance a property a more conventional way ( which I’m worried they would tell me the same thing then) or do you know more creative ways I can get financing?

If you're looking to refinance into a conventional, conforming loan, then you'll have to wait out the 6 month seasoning period.