I am new to this forum, it is nice to meet you!
My mother and I decided we would like to grow dwarf or semi-dwarf fruit trees in containers. We don't own the place we are at currently so the trees may need to wait a year or two before being planted in the ground. I am allergic to many kinds of fruits but I am not allergic to stone fruits so I am looking to plant a plum tree. My backup option is an apricot tree.
I have a number of questions and I've already done hours of research but found there's little information out there. Could anyone please issue a response to my questions if you know?
FYI - I live in Michigan in the USA in growing zone 6A and we get long cold winters (up to -20F/-28.8C sometimes) and occasional arctic freezes. Spring isn't usually until early or mid-April and trees don't usually bloom until late April/May.
1. I am hearing mixed reviews about the taste of the Stanley plums-my own palate isn't immensely picky towards fruit but does anyone know how it tastes? I cannot find them where I live to try them first. But I heard someone grew them in Canada with success so they may do well in my climate.
2. Can Italian plums be grown in a location that has long winters? Do they taste much better than Stanley plums?
3. If I am only planting my tree in a container will I get plums the first year?
4. If the tree I buy is taller (6 or 7 feet?) is it more likely to bear fruit rather quickly? I have issues with instant gratification...

5. Are European plums high maintenance? I read that Japanese plums are high maintenance.
Thank you all for reading! I will hope for a response.