All four of the options you outline I believe work in today's market and with the ability to refinance after a rehab, you may be able to break even or cash flow with an improved equity position. 

As a first-time investor, you might find it easier to start with properties built after 1975, as building codes improved significantly around this time, particularly regarding wiring and plumbing, which can reduce the number of surprises and costly repairs.

Operators that are open and able to offer combined usages for slower seasons, such as mid term discounted extended stay rates in the winter, can improve lower estimated production in the off-seasons. 

They accepted terms for creative financing for 1 year allowing me time to improve rents and refinance with very little down payment.

You can also consider increasing your deductible to lower the premium, assuming you have enough reserves for emergencies.Energy Efficiency Improvements→ If you cover utilities for your rental properties, look into energy-efficient upgrades (such as LED lighting, better insulation, or energy-efficient appliances).

These neighborhoods are usually less risky than C Class areas, but showing solid comps, market trends, and your plan for value-add improvements will boost lender confidence.If you need any help with financing options, structuring deals, or putting together proposals, feel free to reach out→ I'd be happy to assist!

Perhaps they're also open to some financing solutions as well.Pre-Listing Home Improvements - Curbio - Curbio

I want to build more connections and improve my networking skills.

Combined, a bedroom and bathroom addition could potentially add $30,000 to $80,000 to your home's value.Avoid over-improving for your neighborhood.

You get rid of (what sound like inherited) tenants that are a hassle - and will continue to be - their behavior never improves, fyi.