@Ben MosierIt appears this cash is allocated as an opportunity fund for you.  

My question is...how much should I allocate/factor in for Cap x and monthly maintenance on a new construction?

This is known as "bonus depreciation".This has the potential to create substantial passive losses, which are allocated to those who invested in the property. 

If you allocate enough for maintenance/cap ex, you would be the first newly that I am aware of to have done soRecognize there is a poor relation between initial cash flow and actual cash flow over a long hold.  

If you do not use the funds, you will just have to pay the interest every month to keep the line of credit active.As for cash out, you can draw up to 80% for primary and use the funds to allocate/payoff your debt.

There has to be a number of re-allocations or typically transactions that involved flipping or common turnover in order to get to that point.

It's sad...but making me try to re-allocate my time and resources so that I can do my own direct marketing more effectively. 

I am putting together my business plan for my wholesaling business and I am wondering how much money should I allocate per month towards marketing?

I thought I would give you guys another update about the depreciation thing:  my accountant has essentially advised that we should not depreciate 100% of the purchase based on the the following logic:"As long as you pay the nominal ground rent, the ground rent owner can't sell the land, so I think that land still has value and there should be some sort of allocation to it.

You just have to allocate a budget to do it consistently.