I find if I do the "heavy lifting" like drawing out a system and or the floor plan of the cabin, you can find a guy to do the "official" work fast and for a cheaper price than if you sit back and do nothing.

Same thing I still do  BRRRR method  Buy a SFR - 200k < and pay 15% down using a RENO construction loan Use the extra Funds to pay for first round of materials ( 30k or so )and Labor (20k ) and then request your "draws" to recoup your funds.  

@Danny RandolphYeah, I’m currently in the construction field and we usually get a 20-40% deposit, then get draws after certain stages/inspections have been passed

They did not do construction draws you needed your own cash for that. 

A HELOC gives you flexibility since you can draw as needed and only pay interest on the amount you use, which might be useful if you’re not sure exactly how much you’ll need upfront.That said, it’s important to compare the interest rates between a HELOC and your expected returns in the stock market—if you’re making more in your investments than you’d pay in interest, it could be a good play. 

Get a good attorney to draw up your LLC and spell out what everyone does and how you can push any of you out when they underperform.

Get architect into the house when you are in escrow, get all drawings and site visit done while in escrow along with prep to submit once you close 2.

And I feel your pain.On my FLA builds my GC was very well known to me and trusted if I did not have him I would have been were you are at stalled.. but for me I just paid cash for the lots and gave no deposit to the GC ( again long standing relationship) so when he finally was ready we just funded draws on completed work .

You do have to be able to front the cash prior to each draw, but other than that they've been good to work with 

Because we're flippers we can't afford a landscape designer so we go with the style of the home, look at google images based on what kinds of landscaping go with that type of property and then we draw a map of where we want the beds and grasses to go.