BUT one deal is pretty much guaranteed into a second deal I can assure you which compounds into what @Ray Fisher spoke about earlier.Find a way to add value, knock down that debt and NETWORK! 

I was thinking of taking advantage of compound interest.

That is not the point.If prices were do double every 10 years (sub 7% compounded growth), your $100K would become $200K in 10 years and then $400K in 20 years.

Look at the compounding over the years. 

This corrosion happens when formic acid accumulates on the coil as a result of the interaction of water, copper and volatile organic compounds (VOCs) in your indoor air."

Not unlike putting money into an investment and waiting for the compounding effect.3.

Some may not find this horrendous, but this return has 0 compounding which means it far underperforms lessor returns that compound.  

That's about 200% annually, or maybe a little less on the front end if you want to think about compounding.

If you jump in now you will have an extra year of compound interest.

If the walls are bowing, they might need to add the retention system to pull the wall back in place.It really depends on the work needed.