I am concerned about mortgaging too much because I have learned the drastic effective of interest on this sum of money and it hurts my stomach to think I could possible pay 2-3 times the principal on my loan.  

Track all of your income and expenses in report form that you understand and invite people you trust to review the report regularly and try to cut expenses and increase income.I could say more personal items as well as business matters that might effect you but I'll quit now,  The more you learn, the more confident you will be.  

But they sacrifice the tax savings and compound interest effect of the 1031.You may want to look at switching your strategy from buy - fix - flip.  

Will this effect credit at all, having these accounts / card?

This so-called tipster, coach or ripoff, has a blog on bigger pockets and explains that these post cards are what HE USES and has found them to be effective!!!

So now I'm trying to create a mailing campaign that's effective but also cost friendly.

The property owner will always be responsible for handling issues that effect the safety and habitability of the property and that effect the proper function of systems and fixtures attached to the property.

A landlord can modify all their tenants leases to effect a entire building in a short time frame.

The effect is potentially quite significant, but that doesn't mean that the proposed investment is not the best one you can make for your plan despite the taxes.

What I found most effective is finding someone who wants to learn the business.