Other factors of condition, schools, and rental increases are some of the other factors to consider that will not appear on a spreadsheet.

Second, your tax prep fees would increase dramatically.

Refi'ing into a 15yr loan is likely to both increase your effective rate and crimp your future buying power by increasing your DTI. 

I would tithe on my increase, which would be profit whether you take it home or leave it in the business.

@Kala SamuelTo start investing in real estate, define your goals and strategy, choose a market with job growth, population growth, and rental demand, finance your first deal with FHA Loan, conventional Loan, or Hard Money Loans, find the right property, build a support team, make offers, inspect the property thoroughly, and manage wisely.

The market was increasing and we were able to find an off-market deal from some friends who held the property for over a year had no interest in fixing it up.

By being open to single family homes as well it really increases your choices, and for us, reduced the cost per door of acquiring our properties.  

Has anyone joined & had success since the double price increase?

I don't have an answer for your question, about increasing "winter" bookings, and I hope you've found one by now.

Does having CHAP (tax credit) increase the value of the house?