Look into KBKG for cost seg, they also have an online calculator, but a full manual study is far better.

Buy a copy of James Dahle's Asset protection book for doctors he runs a company that sells financial education books and courses focused on doctors (White Coat Investor).   

A lot of important questions, and you are looking for tips from the internet.  

This can build equity and potentially increase rental income through property appreciation.Another option is to sell one or more properties to free up equity and reduce mortgage debt, which can be useful for reinvesting or diversifying investments.refinancing one or more properties to lower monthly mortgage payments and increase cash flow could also be beneficial, especially if interest rates have decreased.the best course of action depends on the clients financial goals and risk tolerance

Some people say multi families are harder to sell than single family houses because the buyer pool isn’t as big but I keep my properties in tip top condition and I just don’t see that as being an issue.

They specialize in quick and fast loans that will come with credit card like interest rates.Here are some additional tips for securing the best mortgage rate for your investment property:Build a strong credit profileSave for a larger down paymentShop around for lendersConsider different loan typesDemonstrate a stable IncomeChoose the right propertyBuild a relationship with the lenderBe prepared with documentationConsider interest rate buydownsMonitor interest rates

Useful tips, very "Tax Planning 101". 

Can I just download a California Real Estate Purchase Agreement template from online, fill it out and move forwards with that? 

I could be wrong of course and I dont know what state your in.. but the redemption rights are for the owner of the property.. they would have to redeem the first and then the second reattaches if there is no redemption the second is removed from the property but the owner who lost it still owes the money on the note and the second can sue on the note for a deficiency.

Of course!