Here's why:Let's say I can get a HELOC with a $30,000 limit, interest only at 3.75%, and every ten months I apply a $10K "chunk" to my 30-year, 3%, $150K 1st mortgage. 

Finally, The rent control discourages further development, limiting supply which results in higher rents.So rents go up, but the rent control advocates are too uneducated on the economics of the rent control policy to see their role in the rent increase.Another consequence of rent control is no value in keeping the property as nice.

Information including but not limited to: - Median Sale prices for different property types (SFR, MFR, Condo/HOA, etc.)- Average days on market- Absorption rate- Historical data on rents and sale prices in the area- Population growth- Main economic drivers (industries, individual companies, etc.)- Crime stats... if you know specific zip codes/submarkets that you'd like to target, the best data will come from local precincts. - and more..I'd recommend remaining active not only here on BiggerPockets, but in other valuable RE investment networks that you can find - i.e. local meetups (meetup.com, eventbrite, BP local events). 

I personally think #2 limits your audience.

Instead:401(k) loans: They’re low-interest, and you’re paying yourself back.Roth rollovers If you can afford the taxes now, this gives future flexibility.Creative financing: I’ve seen clients leverage partnerships or seller financing to limit retirement fund withdrawals.One thing to consider: real estate markets today are vastly different from a decade ago.. so opportunities may require extra creativity.Have you looked into specific deals yet?

@Jin ZhangI would only measure pros and cons against a goal.

You set the time limit for this clause, whether you want to be their source of funding for just the one project, for a year, for two years or forever. 

Low prices enable more people to buy, limiting demand for rental properties so rents decline (in inflation-adjusted dollars).Population Growth: In areas with growing populations, demand outpaces supply, driving up property prices.

One issue I see with this is that I do not have a real estate license so I don't think that would create any issues with STR management, but as for MTR management it seems like there are certain limitations without a license - any feedback on that would be appreciated-Staging properties primarily for FSBO's as I know properties listed by realtors will typically have an in-house staging offering.

Pretty much everything I have seen and read is:Find out the sellers motivation/problem and speak to solving that issue.Give an offer but explain how you got your numbers.Other than that, it seems pretty limited for negotiating information.