The answer is right in front of you bro. Assuming am in your position and own two houses out of which one is abandoned and i don't have the capital to develop it to a state where i can rent it out to generate income, i would consider selling it and put 70% of the funds on btc. No doubt in 2 to 3 years to come btc must have increase more in value, enough for me to buy a decent house for rentage.
As long as you have goal and know when to take advantage when btc hit your price target, you will be glad to make that deceission.