Yes, pieris does well in large containers
No, it's naturally compact.
I live just north of Houston and planted one Mountain Snow Pieris as a test last year. It is planted in a shady area and has survived the heat, Hurricane Harvey, etc. so it seems pretty hardy. It has bloomed more than once. The growth rate is very slow, though.
Each plant has either white or pink. Buy the color you want while it’s blokming.
The growth zone for the Pieris shrub is zones 5 through 9.
This plant will grow well in USDA zones 4-8 so you will want to check this for your area, and it grows well in Part sun to Shade locations, so it sounds like the location you have picked out would be good for this plant
Yes, this plant needs to be planted in full shade.
Yes this plant should grow very well in your area especially in a shady location like your described. This plant will bloom in early spring for 3-5 weeks depending on growing conditions.
This plant is in a 2.5 Qt pot
This plant is not recommended for indoor use.