Ringo - if you have a US passport you will not need a trust...that is for us "furriners" who cannot register an aircraft with the FAA.
You may have to pay VAT on your aircraft if you don't already own it; there are concessions for overseas immigrants who import their "personal possessions" but you need to have owned an aircraft for at least six months and the Revenue will impose conditions on you selling it after you get here. VAT rate depends on country of import and will be 20-25% of the assessed value.
Eurocontrol is only applicable to aircraft weighing over 2 tonnes (ish) so a C152 won't have to pay.
Maintenance and pilot checks are not a problem - there are lots of N reg aircraft based in Europe and qualified engineers and instructors to serve them.
The FAA allow holders of foreign licences to fly N registered aircraft in the airspace of the country that issues the licence.
Getting a C152 to Europe from the USA might be a problem - it is too small to ferry and will need to be dismantled and boxed. The costs of relocating such a "low value" aircraft will be disproportionately huge. A more valuable aircraft costs about the same to move and is, thus, "better value".
You may be better advised to buy something over here - there are N registered aircraft available on the "local" market.