Do not cover the foliage. Just pile up the soil to cover the lower stems and the potatoes to prevent the light getting at them.
They are edible if you need the space.
Donate it to a park. anonymously if necessary.
Yes but the plant needs its leaves. By all means cut them off after you have gathered the fruit. Not before. I guarantee the fruit will ripen despite the foliage.
The easiest way is to make a former and wind wire around it to make wire hoops. Then you just stick the two ends in the ground over the plastic. Do not be too ambitious and buy sheets that are too long. Several shorter ones are more useful. And remember to secure them or the wind will take them!
Let this be a warning to anybody tempted to buy any sort of trap. Please work out beforehand what you are going to do with whatever you catch. This applies to squirrels, rabbits, rats, magpies and mice; or anything else.
I would suggest you do not plant a tree in the lawn. It will drive the person who does the mowing to distraction. Plant it in a border if you can.
Lemon grass, bought from a shop.
Before you do anything, decide how many plants you realistically need and take out the extras. Then proceed as above.
I would forget the bricks and just move in some pots of plants to put in the front of the pile. You will be glad you kept the pile when it has all rotted down.