I always make my antenna's so they can come down and go back up easily. You have some pretty interesting stuff to work with. Might I suggest an end-fed Zepp? Good performing antenna and it seems it would maybe alleviate your not having the room to put up a proper inverted L. It seems you already have all the ingredients you need to build one and it might work out quite nicely for you as long as you have a good ground to work with. You will also need a balun or a tuner with a balanced output. Design it for the band you use most and it should also tune and work well on other bands.
I once built an end-fed Zepp to get an AM station back on the air after a tower failure. It worked quite well.