The local building department wants the replacement stairs to have a 1-hr fire rating due to the proximity to the neighboring property.

its a 4  unit mobile home park, all POH, 100% occupancy with slightly undermarket rents  separate sceptic and a single well.At the asking price of $240K, there is 12% cap rate. 

With a $60/mo HOA(external maintenance not included with the exception of fencing) and 6.5% interest rate, my monthly mortgage (with taxes, insurance, HOA, etc)  will be around 2600/mo.

In my experience (but mind you as a service provider) these types of properties are usually higher rated and better overall.

You can search for members and see the agents (alongside everyone else) in Seattle but the only way to show up on a list of agents is to pay Bigger Pockets for advertising (currently $2,000 / 25 leads here in Seattle). 

A fully paid off property which now should be worth at least $300K with appreciation, I can access 75% of that with a cash out refi so roughly $225K - refi costs.To me, its a no brainer to do bi-weekly IF you plan to keep the house for that long AND you do not plan to refinance (rate or cash out).

Here are some additional activities that count, toward real estate professional and material participation hours.Research market for real estate transaction opportunities; current office market rates; terms of financingMaking offer contracts for properties that you end up buyingNegotiation for acquisition of rental properties that you end up purchasing; including directing due diligence and managing financial projections/business plansObtaining financing for properties that you purchaseProperty inspectionsAdvertisingMeeting with Prospective Tenants/showing properties to prospective tenantsNegotiate, obtain, & review proposals and contracts with vendors (insurance, utilities, etc) for property servicesReview and Negotiate The Terms of Sale AgreementsStaging and Decorating3rd party contractor, vendor, or service provider supervision

Because interest rates are higher than before you're expectations on the strategy might have to get adjusted and be more creative in the acquisition. 

You could pull out $150,000 via a HELOC at 8% interest (about market rate right now) and the monthly interest only payment would be $1,000.

I was only doing handwritten since I have the free time and I constantly hear that handwritten has a higher reply rate, but I'll definitely do more research into professional letters for my next round.