Well I guess that takes care of the retaining wall part. Though I did help put in one that was around 90 feet in length and 4feet in height using pavers and it came out pretty good. Still there and doing well as far as I know.
I have a gas tankless in this house. Works very well,but as with all of them,takes a minute to get water up to temp. Cons. Electric uses a lot of power while in use. Remember,it has to heat water to temp so that alone is going to draw power. So much so,that in some houses,it's necessary to add to the present electricity in the house. It will take it longer to bring it up to temp too,(if memory serves). Running two showers at the same time doesn't work too well,(same goes for the gas kind as well),hence why a larger one is needed. We have a smaller gas one and it's not all that fond of heating two sources at the same time. Especially when the two sources it's trying to supply hot water to are in two very different areas of the house. Running a gas line can be expensive as well if one isn't already there by the way. I researched them heavily for my condo,(not necessary as it's one bedroom),and when helping my fiance' with buying this house. Lot's of good info out there.
Speaking of which,it's getting in to that time of year when the temps begin to climb some more,so it's about time for the outdoor work,(extensive ),to start. Cleaning and sealing eaves. Putting in eave vents,then screening them off so every living thing in the area doesn't try to move in to them. Trading out the vents to the crawl space is part of the gig too. And that's just the first week.