Can a real estate investor find a solution to this so everyone wins?

Do many of you see upsides to mixing up your portfolio meaning short-term properties looking for instant cash flow adding fix and flips and holding for long term appreciation or even goals extending further of paying off these properties and holding for long term retirement or do you see if it's better to stick to one of these and go all in and make that the only strategy you use? 

Believe me there are some grannys running around who became instant millionaires who bought a long time ago and recently sold.

I have both bought and sold through a property manager of mine, both ways were a win-win for everyone.As for the Top 5 LANDLORD Mistakes, I will just re-iterate:1.

Obviously, it needs to be a win-win situation for both of you.

A true win/win.

We are impressed with this person's success and knowledge, know him to be a stand up guy (he has contractor background too), and see a win-win for both parties with future deals and lead exchange downstream.The funding scenario is . . .80% Hard Money with 20% Private Lender Gap Financing1st Position Loan Amount80% Hard Money for Purchase and RehabFinancial Requirement - $144,000Use of Funds - 80% Purchase and 100% RehabLender to be Recorded as 1st Position Lien HolderLender Holds Back Construction Funds and Drawn Upon as Needed.2nd Position Private Lender Loan Amount20% Private Money for Purchase and Carry CostsFinancial Requirement - $35,000Use of Funds - 20% Purchase, Closing and Carry Costs for 1st Position LoanTermsLender to be recorded as 2nd position lien holder on title filing12-month balloon note with no prepayment penalty2 points and 10% annualized interestPrincipal, Points and Interest to be repaid at retail sale of the propertyMy stepson is well aware his 2nd position can be extinguished if things go south.  

If you are the winning bidder and become the owner subject to a senior lien, you're going to want to know what rights you have (if any) when working with the senior lender.Just my opinions here.

Messages such as this in this tone won't win you any favors."

If you're being quoted a range of numbers, instantly discount the half quoting you south of the median. #4 gave you the lender-specific fees, this is just testing for who is "quoting low" to bring business in the door.9 - Honestly, that's kind of a loaded question.